One day, Kanna, who was seduced by her son's classmate's father and entered into an affair with him, is invited to a happening bar by her lover. However, it is an illegal members-only club. At her first happening bar, Kanna feels an abnormal excitement at seeing other people having sex, and before she knows it, she is sucking her lover's penis. Kanna becomes addicted to the pleasure of climaxing in front of everyone. As she begins to visit the bar once a week as invited, her sense of morality gradually becomes distorted and she begins to display indecent behavior that is unthinkable for a married woman and mother...
