Reiko finds out that her son's best friend, Tatsuya, is still a virgin. Fueled by her daily sexual frustrations, Reiko, a carnivorous woman, takes advantage of the opportunity when her son goes to the bathroom to try and get his virgin dick, but Reiko's incredible technique makes Tatsuya erupt in no time. Reiko is depressed when she sees Tatsuya running away in embarrassment and humiliation, but... That night, Tatsuya, unable to forget the events of the day, dreams of Reiko wearing a bondage suit.