When Naoko was a freshman in high school she was kidnapped and imprisoned by a man who lived next door. For one month, she went through hell. Finally, she killed the man and escaped. Now as an adult, Naoko is a doctor specializing in infertility treatment, but she also has another side. Naoko is a popular master in a S&M club.

A lonely otaku is fired from his job. He is rescued in a ruined building by a strange girl in a sailor suit. When he wakes up, the girl becomes a figure. The young man and the pretty figure begin to live together.