Yuko is a lewd wife whose sexual desire does not stop increasing with age and sex with her husband is not enough. What's more, he loved teasing people to the point of being extremely annoying, and his stopping techniques were so wonderful that they could only be described as brilliant. One day, Yuko's son Kazuya masturbates and smells the stinky semen he puts out on a tissue and is turned on. Yuko loses her reason and comes up with the idea of turning her beloved child into an adulterous pet...