When I went back to my parents' house to visit the family grave. I happened to meet a teacher from my student days. We hit it off and decided to drink at a bar. We ended up having a one-night stand. However, the teacher was someone who liked bondage. Mao, who had never been tied up before, awakens to an unknown pleasure. Mao, who can't forget the pleasure of the rope, masturbates while binding herself, but it's not satisfying. While her husband is on a business trip, she goes on an affair trip with her teacher. Two days and one night of training.