Genta, a perverted father-in-law with a strong sexual appetite, is Itsuka touching his son's wife, Ryoko, in a way that is almost sexual harassment. He spends his time fantasizing about having sex with her one day... One day, when Ryoko is injured and unable to move, Genta insists that it is for treatment, and he forcefully gropes her body, and when he finds an opportunity, he pushes her down. Ryoko is raped before she can call for help. From that day on, the father-in-law's shameful teasing of his daughter-in-law begins...