Aoi is blessed with a kind husband and lives a happy married life. However, Aoi has one complaint - living with her vulgar father-in-law. She hates being alone with her father-in-law during the day when her husband is not around, so she goes to work, but she falls asleep tired from being busy at work and only having her father-in-law around. Finding Aoi defenseless, her father-in-law takes advantage of the fact that his son is not around to play with her young body and rape Aoi. From that day on, whenever the father-in-law and his daughter-in-law are alone together, he enjoys the beautiful body of his beautiful daughter-in-law...