The wife's friend seduced him... Tetsuya and Hitomi have been married for a year and have a very good relationship. The husband's job is going well, and the wife is a chaste and good-natured woman. They live a picture-perfect happy family. One day, the wife's friends come to the new house to hold a party. However, while everyone is drunk, the husband is seduced by the wife's beautiful friend and they end up having a relationship. And... the husband, who has awakened to his masochistic nature, becomes addicted to an affair with the beautiful woman, experiencing excitement and intoxication like he has never experienced before...