Miki was living a happy life with her husband Takuzo. However, the recession has forced Takuzo's company into a management crisis, and as part of cost-cutting measures, Ota, who was his personal driver, is laid off. Ota loses his job and is kicked out of the company dormitory. Miki, who has always been looked after by Ota, worries about this and finally allows him to live in the attic without her husband's permission. The three of them then start living a double life, unknown to only her husband, and Miki, despite her hesitation, becomes Ota's sex slave...