In a quiet neighborhood in Seoul, the life of a young woman takes an unexpected turn when she moves into a new apartment and begins to suspect her strange neighbor. With an air of mystery surrounding this man, who seems to lead a normal life but exhibits unsettling behavior, the protagonist feels both attracted to and alarmed by him. As she delves deeper into her neighbor's life, she uncovers clues that suggest not everything is as it seems.
The tension escalates when a series of disappearances begin to occur in the area. Driven by her curiosity and an instinct she cannot ignore, the young woman decides to investigate further. Gradually, she unearths dark secrets that could change her life and that of her loved ones forever. As she ventures into her neighbor's disturbing world, she finds herself caught in a dangerous game where the line between doing the right thing and madness quickly blurs.
With a tone that oscillates between thriller and psychological horror, the story creates an oppressive and tense atmosphere, leading the viewer to question trust and the secrets that may lie behind an apparently normal facade. In the end, the young woman's life becomes a struggle for the truth, where each discovery brings her closer to an unexpected and chilling climax.