The father-in-law can't resist his son's wife, but he convinces himself that she is his son's wife, and although he has his hands on an aphrodisiac and aims for another woman, he ends up using it on his son's wife. When the father-in-law thrusts his full force into the wonderful body of the horny wife, the young body twitches and climaxes. He feels sorry for his son, but he can't resist the pleasure, and the horny wife is thrust into even more.