Sumi Kurokawa plays Natsume, a slender married woman living with her husband in a condominium owned by her stepfather, Tatsunori. She routinely helps out by cleaning his apartment and doing household chores. One day, while working in Tatsunori's room, she dozes off from exhaustion. She suddenly wakes to find him standing behind her, touching her body—sniffing her hair, groping her skin. The man she sees before her is no longer the kind and gentle father figure she knew, but a beast driven by raw desire, his eyes filled with lust and depravity. What follows is a harrowing act of rape and humiliation, as Natsume is forced to submit to her stepfather's uncontrollable urges, her dignity stripped away in the place she once called home.