Momoko, a mother who has been separated from her husband for 15 years, has devoted her life to her beloved son without remarrying. - One night, I heard gasping sounds coming from my son's room. - And when Momoko spies on her beloved son having sex, she is dominated by jealousy rather than the joy of seeing her son grow into an adult man. - After this day, Momoko's perception of her son changes completely. - Momoko, who is struggling with the wall of parenthood and unable to suppress the sexual desire that has been building up for 15 years, invades the bathroom while her son is taking a bath...