Eriko who has poured all of her affection into her only son, Shinichi, even refusing to work with her husband. However, Shinichi was also around the age, and the two began to seek each other's bodies. One day, his brother-in-law, Toshio, visits the house. Toshio, who knows the fact that she is sexless with her husband, gives Eriko a curious look and furthermore, her body is played with. And, unfortunately, Shin'ichi sees the scene. Shin'ichi's cock has never existed before in his mother's obscene appearance, which he thought was his own, hot and hard.
