Ai's happy marriage collapses when her businessman husband is betrayed by a trusted moneylender, buried in debt, and driven into bankruptcy. Desperate to restore their old life, she secretly meets the lender, who demands that she become his woman every weekend if she wants her husband saved. Believing she alone can endure the sacrifice, Ai offers her body and begins a humiliating series of weekends as his substitute sex slave, repeatedly creampied with no end promised until she becomes pregnant.