One day, Ginji catches his son's wife, Yuka, inviting a young man into the house and indulging in a passionate affair. Unable to bear the shock, he decides to strictly discipline her and transform her into the kind of wife befitting this household. With the help of his friends, he subjects Yuka to various forms of training, including erotic toy play, bondage, whipping, wax play, forced deep throat, and creampie sex. Through this process, Yuka gradually transforms into a depraved woman, returning to Ginji reborn in her new, sensual form.