Manami, a married woman, accidentally sees her son's friend masturbating in the bathroom. The sight of a male organ, which she hasn't seen in a long time, burns into her mind and keeps her awake at night. When she is left alone with the friend who is staying over, he makes his move. Unable to fully reject him for seeing her as a woman despite her age, Manami crosses the line. While feeling guilty toward her husband who is away on a business trip, she cannot let go of the young man's body. In this immoral flirtation, the housewife is swallowed by an irresistible pleasure...