An extended family relocates from the city to a remote mountain lodge they transform into a quiet retreat for hikers. Kang Dae-goo, a middle‑aged father, moves with his wife Soon-rye and his brother, known as Uncle Kang, into the mountain house. They are joined by their adult children: Young-min, Mi-soo, and Mina. What begins as a hopeful quest for stability soon gives way to a cascade of misfortunes as a string of weary guests drop in and never leave as planned.
The first guest arrives late one night—a lone hiker who requests a room and three beers. Left to his own devices, he quietly forges his room key holder into a sharp tool and, by morning, is found dead. The family faces a grim dilemma, and the father decides to bury the body in the woods, convinced that the authorities would interpret it as a suicide rather than a staged disappearance. The choice to hide the truth sets a tone of secrecy and fear that threads through every subsequent visit. The lodge’s already fragile balance begins to crack when the next guests arrive: a young couple seeking privacy end up dead in their room, their fate a troubling echo of the earlier death.
Tension escalates as a pair of local friends come by for drinks. One man falls for Mi-soo and tries to violate her, but Young-min intervenes. In the struggle, a deadly accident occurs when the assailant is pushed off a cliff, and the remaining friend is captured by the family to keep him from calling the police. The lodge turns into a trap for outsiders, while the family’s code of mutual protection tightens around them.
Meanwhile, Mr. Park, the benefactor who provided the lodging, arrives with a sinister plan. He hopes to arrange for his illegitimate younger half-sister to be murdered by a hitman so he can inherit their land and its profits. The family’s sense of security falters as Uncle Kang senses foul play and sends the half-sister home to Seoul. The plan spirals; the hitman arrives late, only to discover the room is already occupied by an undercover cop investigating the recent disappearances. The hitman kills the cop, but is himself killed by Young-min in a subsequent confrontation. The web of violence tightens and grows more tangled with every turn.
A heavy rainstorm overnight threatens to reveal the buried corpses, forcing the family to improvise again and again. They attempt to incinerate the evidence, but the plan strains under the weight of time and circumstance. When Uncle Kang returns from a trip to Seoul, a confrontation with Dae-goo turns violent. Young-min intervenes to save his uncle, suffering a concussion in the process; he is hospitalized, and the elderly parents are left to carry on, carrying the weight of their decisions as they try to stay one step ahead of the truth. A local man who has been imprisoned tries to escape, only to have his ropes snag and trap him in the trees as he staggers away from the lodge.
Mr. Park reappears, shocked to find his supposed evidence of “termination” instead of proof of the plan’s success. He discovers the body of the undercover cop instead of the intended victim and dies in a struggle as he attempts to flee the scene. To keep attention away from the mounting carnage, Mrs. Jeong switches off the lodge’s circuits and the storage building’s power, pouring gasoline over the corpses. Mina, trying to watch television, asks for the circuits to be switched back on, accidentally triggering a short that bursts into flames inside the storage area. The cremation fire erupts too soon, trapping the parents inside.
While the parents struggle, Young-min remains in the hospital, recovering from his concussion and muttering to himself as he watches a news report about the supposed North Korean agent who was the hitman—an identification that seems at once absurd and eerily fitting. The body had vanished, and Young-min seems to find a strange relief in the chaotic news while those around him watch in confusion.
Eventually, Uncle Kang, Young-min, Mi-soo, and Mina gather for a calm dinner, utterly unaware of the fire that rages behind the scenes. The parents return, bandaged and exhausted, and dinner proceeds in near-silence. A sudden knock at the door interrupts the meal, and the dog’s bark is met with a hushed silence as the family shares a guarded, practiced stillness. They stand in the dining room doorframe, silently bracing for what might come next, a quiet family living a life of unspoken secrets.
The film closes on a wide shot of the lodge in winter: Mina gazes out, then turns to the camera with a wary, unsettled expression as The Partridge Family’s “I Think I Love You” fills the scene, underscoring a sense that happiness here was never truly within reach, and that violence and secrecy linger just beneath the surface of every ordinary moment.
