In the bustling city of Seoul, the impoverished Kim family lives in a cramped semi-basement apartment, struggling to make ends meet. The family consists of Ki-Tek, the father, Chung-Sook, the mother, and their two children, Ki-Woo and Ki-Jung. They are resourceful but desperate, often resorting to petty schemes to survive. Their fortunes begin to change when Ki-Woo, with the help of a forged university certificate, secures a tutoring job for the wealthy Park family's daughter, Da-Hae. This opportunity opens the door for the Kims to infiltrate the lives of the affluent Parks, leading to a series of manipulative and deceitful actions that blur the lines between class and morality.

As Ki-Woo becomes entrenched in the Park household, he introduces his sister Ki-Jung as an art therapist for the Parks' troubled son, Da-Song. The Kims cleverly orchestrate their deception, each taking on roles that allow them to exploit the Parks' naivety. However, their charade is threatened when the former housekeeper, Mun-Kwang, returns to reclaim her place in the household, revealing a hidden secret that could unravel the Kims' carefully constructed facade.

Tensions escalate when the Kims' past collides with their present, leading to a violent confrontation that exposes the dark underbelly of both families. The film culminates in a shocking climax during Da-Song's birthday party, where the Kims' deception is laid bare, resulting in chaos and tragedy. The story explores themes of class disparity, the lengths people will go to for survival, and the moral implications of their actions.

In the aftermath, the Kims are left to grapple with the consequences of their choices, leading to a haunting reflection on their lives and the societal structures that dictate their fates. The film concludes with a poignant reminder of the cyclical nature of poverty and the elusive pursuit of happiness, leaving audiences to ponder the true cost of ambition and the fragility of human relationships.

• In a cramped semi-basement apartment, Ki-Woo frantically searches for a Wi-Fi signal, while his sister Ki-Jung offers sarcastic password suggestions. Their mother, Chung-Sook, expresses frustration over their suspended phones, contrasting with their father Ki-Tek's calm demeanor. The family's struggle for connectivity humorously culminates in Ki-Woo and Ki-Jung climbing onto the toilet for a better signal. The scene highlights their dysfunctional dynamic and the broader theme of poverty, ending with Chung-Sook's mention of a potential text from Pizza Time, symbolizing their financial struggles.
• In a semi-basement, a family silently folds unassembled pizza boxes when a fumigation truck passes by, releasing gas into the room. Ki-Jung urges Ki-Woo to close the window, but Ki-Tek insists on leaving it open for free fumigation. As the fumes irritate them, they continue their work, with Ki-Woo showing a GIF of a fast pizza box folder to motivate the family. Despite the discomfort, they push through, folding boxes with renewed vigor, though Ki-Tek struggles to keep up.
• In a semi-basement pizza shop, Chung-Sook confronts the Pizza Shop Owner about a pay cut due to defective pizza boxes, leading to a heated argument. Ki-Woo steps in to ease the tension by offering to replace a missing part-timer, though the Owner remains suspicious. As the family observes the Owner counting money from her fanny pack, their financial struggles become evident, highlighting their desperation and curiosity.
• In a dimly lit semi-basement, the Kim family gathers to celebrate Ki-Woo's upcoming job interview, but their moment is disrupted by a drunken man outside. Ki-Tek's awkward toast is overshadowed by the family's frustration and Min-Hyuk's confident arrival on a scooter. He confronts the drunk man, causing him to flee, and gifts Ki-Woo a lucky stone, bringing excitement to the family despite Chung-Sook's complaints about the lack of food. The scene blends light-heartedness with tension, highlighting the family's camaraderie amidst external disturbances.
• Min-Hyuk and Ki-Woo sit outside a neighborhood store at night, discussing Min-Hyuk's family struggles and his feelings for his student, Park Da-Hae. Min-Hyuk asks Ki-Woo to take over her tutoring while he goes abroad, but Ki-Woo is hesitant due to his lack of qualifications. Their conversation reveals Min-Hyuk's trust in Ki-Woo and hints at a potential plan involving Ki-Jung's Photoshop skills. The scene captures a mix of camaraderie and tension as they navigate personal aspirations.
• In an internet café, Ki-Jung expertly creates a fake 'Certificate of Enrollment' while her brother Ki-Woo observes, discussing their plan to print it once the café clears out. Back in their semi-basement home, Ki-Tek admires the finished certificate, expressing pride in Ki-Woo despite knowing it's forged. Ki-Woo justifies the deception by claiming he intends to attend the school next year, with Ki-Tek humorously supporting him. Chung-Sook reminds Ki-Tek to wish Ki-Woo luck for his interview, highlighting the family's support amidst the ethical dilemma of their actions. The scene concludes with Ki-Woo confidently holding the fake certificate, determined to use it for his future.
• Ki-Woo arrives at a luxurious mansion in a wealthy neighborhood, where he is greeted by the housekeeper Mun-Kwang. As he waits for Mrs. Park, he admires the stunning interior and avant-garde art, feeling a sense of awe. Mun-Kwang wakes Yon-Kyo, who has been dozing at a patio table, to inform her of Ki-Woo's presence.
• In the mansion's kitchen, Yon-Kyo expresses her admiration for her departing tutor, Min-Hyuk, while voicing concerns about finding a suitable replacement. Ki-Woo, the nervous tutor, listens as Yon-Kyo bluntly states her high standards for tutoring. The tension escalates when she requests to observe Ki-Woo's session, adding pressure to his already anxious demeanor. The scene captures the emotional strain of expectations, highlighted by Yon-Kyo's abrupt switch to broken English, signaling her eagerness and the weight of the moment.
• In a large, elegant room of a mansion, Ki-Woo confronts Da-Hae about her test-taking confidence during a practice session. He uses an intense coaching style, grabbing her wrist to check her pulse as a metaphor for her emotional state. This unexpected physical touch and his motivational dialogue leave Da-Hae vulnerable and emotionally stirred, while Yon-Kyo observes with a mix of shock and admiration. The scene captures the tension between Da-Hae's self-doubt and Ki-Woo's push for a positive mindset, ending with Da-Hae in stunned silence as Ki-Woo reinforces his role as a mentor.
• In the mansion's kitchen, Ki-Woo discusses his new role as an English teacher for Da-Hae with Yon-Kyo, who shares insights about her son Da-Song's ADHD and unique behavior. Mun-Kwang, the housekeeper, becomes friendlier and engages in playful antics with Da-Song, who disrupts the conversation with his imaginative play. Ki-Woo admires Da-Song's avant-garde drawings, mistakenly interpreting one as a chimpanzee, leading to an awkward silence as the playful atmosphere continues around them.
• In an evening garden setting, Ki-Woo and Yon-Kyo discuss the challenges of finding an art teacher for Da-Song. Ki-Woo suggests Jessica, a former member of Girl's Generation, known for her effective teaching methods with children. Yon-Kyo is intrigued by the idea and expresses interest in meeting Jessica, highlighting their shared goal of finding the right fit for Da-Song. The scene ends with Ki-Woo uncertain about securing an appointment with Jessica, leaving the possibility open for future developments.
• In a hair salon, Ki-Jung gets a stylish makeover while her brother Ki-Woo enjoys a popsicle, leading to playful banter about a trusting woman named Jessica. Their parents, Chung-Sook and Ki-Tek, express approval of Jessica, highlighting the family's supportive dynamic. The scene shifts to the mansion where Ki-Jung prepares for an interview with Yon-Kyo, showcasing her confidence. As Da-Song's curiosity is curbed by Da-Hae's suspicion, Ki-Woo thanks Ki-Jung before heading upstairs, marking a transition from light-hearted sibling moments to the seriousness of Ki-Jung's new role.
• In Da-Hae's room, she flirts with Ki-Woo while discussing her brother Da-Song, whom she views as a fraud. Their playful banter leads to a soft kiss, interrupted by approaching footsteps. Meanwhile, in the hallway, Yon-Kyo expresses concern for Da-Song's behavior, but Ki-Jung asserts her authority, asking Yon-Kyo to wait downstairs.
• In the mansion's kitchen at night, Yon-Kyo anxiously awaits news about her son Da-Song, while Mun-Kwang tries to comfort her with plum extract and a plan to check on him. Their plans are interrupted when Ki-Jung and Da-Song emerge from a lesson, leading to an emotional moment as Ki-Jung presents a drawing by Da-Song that reveals his mental state. This prompts Yon-Kyo to confront her feelings of guilt and concern for her son. Ki-Jung suggests art therapy sessions, but Yon-Kyo remains troubled. The scene concludes with the arrival of Dong-Ik, who thanks Ki-Jung for her help, leaving Yon-Kyo in a state of mixed relief and ongoing worry.
• In a luxurious Mercedes at night, Ki-Jung maintains a cold demeanor while Yun attempts to engage her in conversation. Despite his interest, she mentions her boyfriend, creating tension. Unexpectedly, Ki-Jung removes her underwear, holding it with a twinkle in her eyes, shifting the dynamic between them and leaving the audience in suspense.
• Dong-Ik finds a pair of women's underwear in his car, leading to a tense confrontation with his wife, Yon-Kyo, about their driver, Yun. They express outrage and concern over the potential scandal, speculating about Yun's partner's mental state and planning how to discreetly manage the situation. Meanwhile, Ki-Jung overhears their conversation from the stairs, heightening the tension. The scene ends with Ki-Jung descending the stairs, prompting Yon-Kyo to quickly hide the evidence and put on a facade.
• In the moonlit garden of a mansion, Yon-Kyo and Ki-Jung discuss a recent incident involving a driver named Yun. Yon-Kyo, protective and curious, expresses relief when Ki-Jung reassures her that nothing inappropriate occurred. Their conversation reveals Yon-Kyo's distrust of others, particularly drivers, as she shows interest in Ki-Jung's former driver, Mr. Kim. Mun-Kwang, who overhears their discussion, adds an element of intrigue. The scene blends tension with light-heartedness, underscoring themes of trust and innocence, as playful dogs wag their tails around Yon-Kyo. It concludes with the theme music 'The Belt of Trust' playing as the focus shifts inside the mansion.
• In this heartwarming scene, Ki-Tek and his son Ki-Woo explore a Mercedes dealership, showcasing their bond as they navigate the luxury cars. The focus shifts to Dong-Ik's office, where Ki-Tek waits to be seen. After a meeting, Dong-Ik invites Ki-Tek to drive him, leading to a meaningful conversation about Ki-Tek's pride in his job and the companionship he shares with his passengers. As they drive through the city, their connection deepens, culminating in Dong-Ik praising Ki-Tek's driving skills after a smooth turn.
• In this scene, Ki-Jung descends the stairs in slow motion to find Mun-Kwang asleep at the dining table, prompting a humorous wake-up call. Ki-Woo reflects on Mun-Kwang's long history with the house and discusses strategies with Ki-Jung and Chung-Sook at a pizza shop, where they plan to extract her. Meanwhile, Da-Hae expresses her dislike for apples and longing for peaches, which leads Ki-Jung to discover Mun-Kwang's severe peach allergy, hinting at a pivotal strategy for their plan. The scene blends tension and humor, culminating with Ki-Jung examining a peach, foreshadowing its significance.
• In a tense scene, Ki-Woo meticulously collects peach fuzz, creating an unsettling atmosphere. He interacts with Mun-Kwang by pouring the fuzz over her shoulders, leading to her violent coughing fit later. At the hospital, Mun-Kwang, suffering from a severe peach allergy, speaks on the phone about her distress, while Ki-Tek observes her from a distance. He later shows Yon-Kyo a selfie that inadvertently reveals Mun-Kwang's presence at the hospital, confirming his concern for her health and leaving a sense of foreboding about her condition.
• In this flashback scene, Ki-Tek rehearses a conversation with his son Ki-Woo, who guides him on how to deliver important news about a tuberculosis diagnosis. The scene alternates between Ki-Tek's practice in their semi-basement living room and a car ride with Yon-Kyo, where Ki-Tek ultimately reveals the shocking information. The tension builds as Ki-Tek struggles to convey the message convincingly, but with Ki-Woo's help, he successfully delivers the news, leaving Yon-Kyo stunned.
• In this tense scene, Yon-Kyo and Ki-Tek discuss the alarming presence of tuberculosis in Korea, particularly concerning Mun-Kwang, who is hiding her illness. Yon-Kyo's emotional distress grows as she realizes the potential threat Mun-Kwang poses to her family, especially her son, Da-Song. Meanwhile, Ki-Jung is giving Da-Song an art lesson, unaware of the looming danger. The scene escalates when Yon-Kyo witnesses Mun-Kwang's violent coughing fit in the garage, heightening her horror and anxiety about the health risks to her family, while Ki-Tek silently observes the discarded napkin, symbolizing the contamination threat.
• In a tense flashback, Ki-Tek advises Yon-Kyo on a secretive plan while retrieving a hidden hot sauce packet in the mansion's kitchen. As Yon-Kyo expresses anxiety about a health issue affecting her children, they negotiate the dismissal of the housekeeper, Mun-Kwang, without revealing the true reasons. The scene captures their mutual distrust and desperation, culminating in Mun-Kwang leaving the mansion devastated, unaware of the underlying motives.
• In this scene, Ki-Tek drives Dong-Ik through a rainy night, discussing the recent departure of Dong-Ik's housekeeper. Dong-Ik expresses mixed feelings about her, while Ki-Tek subtly suggests hiring a new one from a service called 'The Care,' handing over a business card. Their conversation blends humor with underlying tension, reflecting their social roles. The scene concludes with Dong-Ik agreeing to consider the card for his wife, keeping Ki-Tek's involvement a secret.
• In this whimsical scene, Ki-Jung adopts a sweet persona while answering a phone call for 'The Care,' impressing her family with her acting skills. Meanwhile, Yon-Kyo, in a separate location, seeks membership information and receives guidance from Ki-Jung. The scene transitions to a serene backyard where Chung-Sook meets with Yon-Kyo to finalize her paperwork, highlighted by the presence of a white butterfly and a beautiful aria, creating a light and domestic atmosphere.
• Chung-Sook brings fruits to Da-Hae, sparking playful interactions with her children and Ki-Woo. However, tension arises when Da-Song unexpectedly sniffs Chung-Sook and Ki-Tek, claiming they smell the same, leading to an awkward moment for the family. The scene captures a light-hearted family dynamic overshadowed by underlying discomfort, as they navigate their infiltration of the Park mansion.
• In a semi-basement at night, Ki-Tek attempts to uplift his family's spirits while cooking, but their moment of gratitude is shattered by a drunken man urinating outside. Ki-Woo, fueled by anger, confronts the man with an umbrella, leading to a chaotic and comical clash. Ki-Jung films the scene, finding humor in the chaos, while Chung-Sook remains focused on grilling. The confrontation escalates, culminating in a wild scene underscored by unsettling music, highlighting the family's frustration and the dark humor of their situation.
• In a sunlit garden, Da-Song uses a soot-covered glass to check the weather while inside the mansion, Dong-Ik playfully teases Da-Hae about her reluctance to join the family camping trip for Da-Song's birthday. Despite Yon-Kyo's encouragement, Da-Hae expresses her desire to stay home and study. Meanwhile, Chung-Sook prepares for the trip, bringing camping supplies and discussing the dogs' dietary needs. The scene captures the light-hearted family dynamics, highlighting Da-Hae's frustration as she ultimately retreats into her headphones, leaving the camping plans unresolved.
• In the mansion's garage, Yon-Kyo instructs Chung-Sook on walking their dog, Junie, before they embrace a peaceful family day. Chung-Sook enjoys a nap while Ki-Woo relaxes in the garden with the dogs, inviting her to join him. Ki-Tek wakes up to pour himself whiskey, and Ki-Jung appreciates her brother's gesture when he brings her water. The scene transitions to Ki-Tek in the sauna, where he turns an hourglass, leading to a soothing sound of rain, encapsulating the warmth and tranquility of family bonds.
• In a lavish mansion living room, Ki-Tek and his family enjoy whiskey and snacks while watching the rain, sharing jokes and aspirations. Tension arises when Ki-Jung expresses frustration over their obsession with wealth, leading to a heartfelt moment. The mood shifts dramatically when Ki-Tek pretends to be angry, only to reveal it was a joke. However, the atmosphere changes again with the unexpected arrival of Mun-Kwang, the former housekeeper, at the door, introducing new tension.
• In a tense and eerie night scene, Chung-Sook encounters the disheveled Mun-Kwang at her mansion's door, who urgently hints at a need to go to the basement. Despite her initial hesitation, Chung-Sook follows Mun-Kwang down the stairs, where they push a cabinet revealing a hidden door. As Mun-Kwang enters the door, Chung-Sook, shaken but compelled, decides to follow her into the darkness.
• In a dimly lit underground bunker, Mun-Kwang desperately searches for her severely malnourished husband, Kun-Sae, whom she has been secretly feeding for four years. As tensions rise, Chung-Sook confronts Mun-Kwang about her actions, leading to a standoff where Mun-Kwang threatens to expose the Ki family using a recorded voice message. Ki-Tek attempts to mediate, but the situation remains fraught with urgency and danger, leaving the Ki family in a precarious position.
• In a lavish mansion's living room during a heavy rainstorm, Kun-Sae enjoys a massage from Mun-Kwang, who entertains him with humorous impressions. Their light-hearted banter is interrupted when Chung-Sook charges at the sofa, causing a chaotic scramble for Mun-Kwang's dropped phone. The scene captures a playful and nostalgic atmosphere as Ki-Tek and his family join the fray, resulting in a humorous tangle of bodies, leaving the outcome uncertain.
• In a mansion engulfed by heavy rain, a chaotic brawl erupts as Ki-Jung uses peaches to distract Mun-Kwang, allowing Ki-Woo to seize a phone amidst the turmoil. As the family gains control, Chung-Sook answers a call from Yon-Kyo, who requests a dish called japaguri, highlighting the absurdity of preparing a meal during the ongoing chaos.
• In a chaotic living room, Chung-Sook receives a call from Yon-Kyo, alerting the family of their imminent arrival. As panic ensues, Chung-Sook focuses on cooking japaguri while Ki-Tek aggressively manages the situation, tying up Kun-Sae in a secret room. Ki-Woo and Ki-Jung scramble to clean up the mess, with Ki-Woo appearing lost in the chaos. The family's desperate attempts to prepare for their guests create a tense atmosphere, leaving the situation unresolved as they rush to act.
• In the mansion's kitchen, Chung-Sook is busy preparing ramen and flank steak while Ki-Woo frantically hides from the arriving Park family. Ki-Jung quickly conceals food under furniture, and as Da-Hae enters her room, Ki-Woo hides under her bed, unnoticed. Meanwhile, Ki-Tek is in a tense situation with Mun-Kwang, who escapes but is accidentally injured by Chung-Sook. The scene culminates in Ki-Tek dragging the unconscious Mun-Kwang out of sight just as Yon-Kyo enters the kitchen, completely unaware of the chaos that has unfolded.
• In the mansion's storage basement, Ki-Tek frantically drags the unconscious Mun-Kwang and attempts to secure her while panicking over her condition. His anxiety escalates when he discovers Kun-Sae, tied up and engaging in a bizarre welcome home ritual for Mr. Park, which causes the lights to flicker. As Ki-Tek questions Kun-Sae's strange behavior, Dong-Ik approaches from the garage, completely unaware of the chaos unfolding below. The scene is filled with tension and dark humor, culminating in Dong-Ik's obliviousness to the turmoil.
• In a dimly lit mansion, Kun-Sae lightens the mood with a playful song, contrasting sharply with Yon-Kyo's heavy conversation with Chung-Sook about her son Da-Song's haunting experience. Yon-Kyo reveals the trauma of Da-Song witnessing a ghost, which led to a seizure, and expresses her frustration over her husband's dismissive attitude towards the incident. A flashback shows Da-Song blissfully eating cake while a dark figure looms nearby, emphasizing the eerie nature of his past. The scene culminates in Yon-Kyo's ongoing struggle to cope with her family's trauma, as the camera focuses on Da-Song's unsettling drawing of the ghost.
• In a dimly lit secret room of a mansion, Ki-Tek confronts the unstable Kun-Sae, who has been living underground and exhibits signs of severe mental deterioration. Surrounded by chaotic notes and drawings, Kun-Sae's incoherent ramblings and desperate pleas for understanding unsettle Ki-Tek. As Ki-Tek's fear escalates, he resorts to using duct tape to silence Kun-Sae, only to discover blood on Mun-Kwang's head, triggering a panic that drives him to flee up the stairs.
• In a tense night scene at the mansion, Ki-Tek secures a secret doorway in the storage basement. Meanwhile, Ki-Woo is discovered hiding under Da-Hae's bed by the family dog, Junie. Da-Hae confronts her mother, Yon-Kyo, about her selfishness regarding food, leading to a heated argument that reveals their strained relationship. As the confrontation escalates, Ki-Woo cautiously emerges from hiding and is called downstairs by Chung-Sook, where Ki-Tek joins them, indicating a shift in focus to the family's next actions.
• In a mansion's living room during a rainstorm, the family struggles to escape the chaos caused by Da-Song, who excitedly builds a teepee outside. Ki-Tek, Ki-Woo, and Ki-Jung hide under the coffee table, feeling humiliated as they overhear intimate exchanges between their parents, Yon-Kyo and Dong-Ik, amidst the tension of Da-Song's antics. The scene blends humor and discomfort, highlighting the family's chaotic dynamics and the stark contrast between the children's embarrassment and the parents' private moment.
• In a tense and suspenseful scene, Chung-Sook coordinates a stealthy escape for her family from the Parks' mansion while they sleep. Ki-Jung crawls out first, followed by Ki-Woo, as Ki-Tek navigates the living room, narrowly avoiding detection when Da-Song uses a flashlight and walkie-talkie to call for help. After a moment of lighthearted banter between the Parks, they fall back asleep, allowing Ki-Tek to open the garage door and lead his family into the rain. The scene concludes with the drenched family walking down a gloomy road, filled with a sense of anguish.
• On a rainy hilltop at night, Ki-Tek, Ki-Woo, and Ki-Jung pause under an overpass, grappling with the aftermath of a traumatic event. Ki-Jung expresses frustration and demands a plan, while Ki-Woo remains in a daze. Ki-Tek, embodying a fatherly figure, reassures them that no one knows what happened and urges them to forget the day's chaos. The oppressive atmosphere reflects their emotional turmoil as they prepare to return home, with Ki-Tek leading his children back into the rain, symbolizing their unresolved struggles.
• In a flooded semi-basement apartment, Ki-Tek, Ki-Woo, and Ki-Jung grapple with the chaos of rising sewage water. Ki-Tek confronts the surreal sight of a live king crab, while Ki-Woo suffers an electric shock trying to close a window. Amidst the turmoil, Ki-Jung resourcefully retrieves hidden cigarettes and cash from the bathroom ceiling. Ki-Woo discovers a sentimental viewing stone in the murky water, cherishing it as a treasure. The scene is underscored by dark music, highlighting the family's despair and the surreal nature of their situation.
• In a dimly lit secret room of a mansion, Kun-Sae struggles to free Mun-Kwang from her restraints, ultimately removing the tape from her mouth. Overwhelmed by distress, she rushes to the toilet to vomit, showcasing her pain. Despite her weakened state, she attempts to reach out to Kun-Sae but collapses. Kun-Sae, unable to speak, expresses his horror through muffled cries. Mun-Kwang, in a delirious moment, tries to lighten the mood with a joke about a past incident, but her condition worsens as she curls up next to the toilet. The scene culminates in Kun-Sae's anguished screams, highlighting their desperate situation.
• In a dark mansion's secret room, Kun-Sae is in a frenzied state, mourning Mun-Kwang's death while Da-Song struggles to decode Morse code from blinking lights in his teepee. Meanwhile, in a school gym serving as an evacuation center, Ki-Tek dismisses his son Ki-Woo's anxious pleas for a plan regarding their dire situation, leading to a tense exchange that highlights their conflicting views on survival. The scene is filled with despair and confusion, culminating in Ki-Woo staring blankly ahead, lost in thought.
• In the mansion's living room, Yon-Kyo excitedly prepares for Da-Song's surprise birthday party while checking on him asleep in a tent outside. She invites Jessica to the celebration and encourages Da-Hae to invite Kevin. Dong-Ik supports Yon-Kyo's plans, taking a moment to rest. The scene is filled with cheerful anticipation as Yon-Kyo organizes the day's errands, ending with her smiling at Dong-Ik's approval.
• In a chaotic morning scene, evacuees in a school gym search for party clothes, while Ki-Jung feels frustrated and Ki-Tek appears exhausted. Ki-Woo lies on the floor, distracted by missed calls from Da-Hae. Meanwhile, in the mansion's kitchen, Chung-Sook struggles to prepare for the party under Yon-Kyo's enthusiastic direction, which includes retrieving tables from the storage basement. The atmosphere shifts to an upscale organic food store where Ki-Tek bags groceries as Yon-Kyo invites guests, emphasizing a casual vibe. Despite moments of light-heartedness, an underlying tension looms, particularly with the mysterious secret door in the kitchen. The scene concludes with Yon-Kyo laughing on the phone, while Ki-Tek, visibly on edge, follows her out with groceries.
• In this scene, Yon-Kyo cheerfully invites guests to a casual garden party while selecting vintage wines at a shop, unaware of the unpleasant smell from Ki-Tek, who appears troubled. Meanwhile, Chung-Sook quietly sets up tables in the garden, trying not to wake Da-Song, who is still asleep in a tent. Dong-Ik, dressed in pajamas, enters and gestures for Chung-Sook to be quiet, highlighting the need for silence. The contrasting moods between Yon-Kyo's lightheartedness and Ki-Tek's darkness create tension, culminating in Yon-Kyo reiterating her request for no gifts as she rolls down the car window.
• In a vibrant mansion garden filled with party guests, Ki-Woo feels out of place while sharing a moment with Da-Hae in her room. Despite her affectionate attempts to connect, Ki-Woo's internal struggle with belonging leads him to leave her side and head downstairs, revealing a suiseki from his bag, which signifies his shift in focus away from the lively atmosphere.
• In a garden of a mansion, Dong-Ik and Ki-Tek, dressed as Native Americans for a birthday party, prepare for a chaotic cake ceremony. As Dong-Ik explains their absurd roles, Ki-Tek's sarcasm reveals his frustration with the Park family's demands. Tension builds between them, highlighting their differing perspectives on the situation. The scene captures the awkwardness and underlying conflict, ending with Ki-Tek adjusting his costume, symbolizing their unresolved issues.
• In the mansion's kitchen, Chung-Sook prepares a buffet while Ki-Jung suggests they address emotional tensions from the previous day. Chung-Sook supports this by giving Ki-Jung food to take downstairs. Their conversation is interrupted by Yon-Kyo, who excitedly presents a gourmet cream cake, believing it holds significance for Da-Song's trauma. Meanwhile, Ki-Woo quietly descends the stairs with a gray bag, hinting at his own agenda. The scene captures a tense yet hopeful atmosphere as the characters navigate their responsibilities and unresolved conflicts.
• Ki-Woo uncovers a hidden door in the mansion's basement, leading him to a secret room where he finds Mun-Kwang tied up. Torn between his emotions and the need to act, Ki-Woo hesitates to use a viewing stone against Mun-Kwang. Suddenly, Kun-Sae attacks, choking Ki-Woo and pulling him back as he attempts to escape. The scene escalates into a violent confrontation, culminating in a shocking moment as Kun-Sae raises the stone to strike Ki-Woo.
• During a festive birthday party in a mansion's garden, a violent attack shatters the celebration. Kun-Sae, bloodied and desperate, emerges from the basement and stabs Ki-Jung in front of horrified guests, including a traumatized Da-Song. As chaos erupts, a brutal confrontation ensues between Kun-Sae and Chung-Sook, while Ki-Tek attempts to save his daughter. In the turmoil, Ki-Tek accidentally kills Dong-Ik with an axe, leading to further panic as he flees the scene just as sirens approach.
• In a surreal sequence, Ki-Woo lies in a hospital bed, reflecting on his recovery and the absurdity of his sister Ki-Jung's death. As a detective reads him his Miranda Rights, Ki-Woo's inappropriate laughter reveals his emotional turmoil. He recalls moments with a quirky doctor, court proceedings, and a bus ride with his grieving mother, Chung-Sook. The scene culminates at a cinerarium where Ki-Woo smiles at Ki-Jung's picture, contrasting with his mother's sorrow, encapsulating the blend of grief and dark humor.
• In the aftermath of a chaotic event, Chung-Sook cleans mud stains in Ki-Jung's room, striving for normalcy. Meanwhile, Ki-Woo watches news about an unsolved murder case involving the Park family, reflecting on his estranged relationship with his mother. As he distributes flyers for his new job, a detective following him accidentally falls down the stairs, prompting Ki-Woo to feel sympathy for the detective's plight. The scene captures the tension of their situation, blending somber reflection with dark humor.
• In this poignant scene, Ki-Woo climbs a winter hill to observe a wealthy family in a mansion through a telescope. As he deciphers what he believes to be Morse code from the mansion's motion-sensor lights, he records the patterns on various surfaces. Meanwhile, Ki-Tek, in a secretive setting, writes a heartfelt letter in Morse code to Ki-Woo, expressing his emotions and the family's struggles. The scene captures the tension of their separation and the longing for connection, set against the contrasting warmth of the mansion and the cold isolation of Ki-Woo's vigil.
• In a haunting flashback, Ki-Tek navigates the aftermath of a violent day marked by the deaths of his loved ones, Ki-Jung and Dong-Ik. As he runs through the mansion's garden amidst panicked party guests, he seeks refuge in a hidden room after gathering supplies. Reflecting on the mansion's dark history, he gives Mun-Kwang a proper burial under a tree, grappling with his emotional turmoil. The scene concludes with Ki-Tek hearing potential buyers outside, hinting at a new chapter for the now-empty house.
• In the early morning, Ki-Taek stealthily enters a mansion's kitchen, reflecting on his precarious existence as a hidden intruder. He scavenges food from the refrigerator and experiences a moment of disconnection while eating tofu in a secret room. Startled by his own reflection, he grapples with feelings of isolation and despair. Despite this, he finds a glimmer of hope as he writes a Morse code letter to his son, sending a message before the scene fades to black.
• In a wealthy neighborhood, Ki-Woo, now older and dressed in a suit, walks with real estate agents, sharing his aspirations of wealth and a future family in a mansion. He envisions joyful moments in the garden but later feels cold and emotional as he gazes through a telescope at the distant Park mansion, reflecting on his struggles to connect with his father, Ki-Tek. The scene captures a blend of hope and melancholy, culminating in an emotional reunion with his family, yet leaving Ki-Woo feeling tearful and longing for communication with his father.