Mr. and Mrs. Tono have decided to return to their husband's parents' home. Her wife Miho had something to worry about. It was with her father-in-law, Shigeo... Will she return to live with her husband's parents in the future? She consults her husband, Kazushige, but he replies curtly, ``You still don't understand?'' At that time... Shigeo, the lewd stepfather, starts to mess with Miho...