Miyu, whose husband's mother passed away and decided to live with her father-in-law, Masahiro. Masahiro always had an obscene desire for beautiful Miyu. Miyu was having a happy life without knowing such a thing, but one day she reunites with Oshima, who was dating before getting married. Oshima still approaches beautiful Miyu, and Miyu accepts it as well. However, the reunion was all organized by his father-in-law, and his father-in-law who grasped Miyu's unfaithful act as a weakness played with Miyu's body as he wanted.