A married woman, Nami, accidentally sees her son's friend masturbating in the toilet. Unable to sleep due to the image of a 'male genital' she hasn't seen in a long time, Nami finds herself unable to resist when that friend makes advances on her while they are alone. She can't refuse him completely as he sees her as a woman despite being older. Even though she feels guilty towards her husband who is on a business trip, Nami can't let go of the young man's body. In the midst of this forbidden affair, the married woman is consumed by an irresistible pleasure...
