Reiko, a mother who has become aware of her beloved son, Koji, as a man. Even if I knew it was a bad thing, I couldn't control my lust, and I invited him with obscene words and attitudes every time, but he didn't react at all. Reiko, who has boiled her karma, can't stand it and shows her foolery ... Since that day, Reiko turns around and treats Koji, who is conscious of her mother as a woman, with a casual attitude. Koji, who can't stand the deposit like a murderer, finally ...