Misaki, the daughter of the hospital director, lives a life of luxury with her husband, a doctor, in a mansion inherited from her parents, but her husband, Ippei, only sees Misaki as a tool for sexual satisfaction. One day, when she is fed up with such a life, her husband's cousin, Tomonori, comes to visit the house. Kokoro by his kindness, Misaki finally gives in to him, but behind the scenes, a shocking plan is being carried out...