Although there is no dissatisfaction in life, the married woman Rin feels unsatisfied with her sex life with her husband. At that time, she meets a neighbor. She can't forget him and musters up the courage to invite him using a key. The man and woman stare at each other intently. Then they finally give in to their intense urge. They drown in passionate, insatiable sex… When her husband goes on a business trip, their desires explode！！！
