"A body like this...its very existence is a violation!!" Shinpei has just become a son-in-law, but his mother-in-law, Yui, is bothering him and his groin. Yui is so beautiful and glamorous that he can't concentrate on having sex with his wife, and he ends up secretly filming her changing and bathing. When Shinpei sneaks a glimpse of Yui's obscene nakedness, he is far from satisfied and goes wild, attacking her! Yui is at the mercy of Shinpei's rough caresses and his enormous, insatiable penis...