Kanako, who lives with her serious workaholic husband, has no nightlife and spends her days in lonely routine. One day, her brother-in-law Shinichi, who is transferring jobs, decides to live together until his room is settled. In fact, Shinichi has been after Kanako for some time. During the daytime when her husband is not around, he ties up Kanako and rapes her. Initially, Kanako resists, but she gradually becomes addicted to the world of bondage.
