Saki is a newlywed who used to be outgoing. She has married her former teacher and lives a happy life. But recently, her sex life hasn't been too exciting. One day, her friend forces her to attend a mixer. But instead of a normal mixer it was fuckfest. Saki meets a guy named Keiji and lets him have his way on her. On the next day, she is called to meet Keiji again. Saki resist at first but enjoys Keiji's huge and hard cock. Keiji confesses to Saki that he has a secret that he hasn't told her. Saki is too curious that she plans to meet Keiji again...