Miyuki, a wife whose husband's business fails and ends up staying at his parents' house, is a bit of a downer. - On the other hand, his father-in-law, Toshiharu, who is a wealthy man, has a strong sexual desire even as he gets older, and he is lustful for the beauty of his son's wife, Miyuki, and is constantly thinking about the possibility of having a relationship with her. - Finally, Toshiharu reaches the limit of his patience, and tries to force Miyuki to obey him without being able to disobey him. - Toshiharu enjoys this, and from this day forward, he plays with Miyuki's body to the fullest...