Minori, the landlady of the apartment complex, is a widow who lost her husband at an early age. Driven by loneliness and maternal desires, she shows special affection toward Keisuke, the young man living next door. Keisuke takes advantage of his privileged position, freely groping and fondling Minori's body, and their relationship gradually grows more intimate. However, Keisuke's father has secretly installed a hidden camera in Minori's room, voyeuristically spying on their private moments. Unaware of the surveillance, Minori becomes increasingly trapped in the sinister grasp of the father and son.