Ririko's happy marriage collapses when her husband's trusted friend, a moneylender, betrays him, leaves him buried in debt, and drives his company into bankruptcy. Desperate to restore their old life, she secretly meets the lender and accepts his demand to become his woman every weekend. Believing she alone can endure the sacrifice, Ririko submits to humiliating weekends as his substitute sex toy, repeatedly creampied in a nightmare he says will not end until she is pregnant.