Six years after marrying her overly serious husband, Mirei, who spends her ordinary and boring days, starts working at a convenience store. After finishing her work, Mirei is invited to dinner by her manager, Nojima. Unable to contain her emotions, she drinks too much and finds herself tied up in a hotel bed. Mirei's masochism gradually develops as her fear that she can't move is attacked. Since then, she has been fascinated by ropes, and she accepts Nojima's further desires one after another.
