A once-happy marriage is destroyed when the husband's company collapses under a huge debt after a trusted moneylender betrays him. Desperate to restore their former life, Yuri Hirose secretly meets the lender. He gives her an ultimatum: “If you want to save your husband, be my woman every weekend.” Believing she only has to endure it for his sake, she agrees to surrender her body. From that day on, her humiliating weekends begin as a substitute sex slave whose ordeal will not end until she is pregnant...