Kanna was seduced by her son's classmate's father and became involved in an affair. One day, she was invited to a hap bar by her lover. However, it was a member-only club that was illegal. She felt an abnormal excitement from seeing others have sex at the hap bar for the first time, and before she knew it, she was sucking on her lover's penis. And Kanna gets addicted to the pleasure of having sex in front of everyone. As she goes to the store once a week, her morals gradually become crazy, and she starts to reveal lewd acts that you would never expect from a married woman or mother...