To save her son's life from a serious illness, Mio, the wife of Katsuhiro, makes a deal to become the sexual servant of a wealthy man named Tekka for one year. Katsuhiro laments his own helplessness, having to sell his beloved wife for the sake of their son. Each week, videos sent by Tekka show Mio being trained from start to finish, and although she initially showed a strong attitude, she gradually becomes completely submissive to Tekka...
