Unable to bear her workaholic husband, Ririka ends up having sex with her son, Taro. They have excellent physical compatibility, and she soon becomes addicted to sex with Taro. She feels guilty about the act escalating day by day, but she just can't forget the forbidden pleasure. The same goes for Taro. His cock is erect as he waits for the moment his father leaves, and his vagina is dripping wet with anticipation. Reaching the limit of his endurance, the frenzied orgy between mother and son begins...