A happy marriage collapses after the husband becomes addicted to stock trading and amasses a huge debt. Desperate to restore their former life, his wife decides that she alone will endure the price and obeys the moneylender's demand to offer up her body. What follows is a humiliating two-day hot-spring trip where an exceptionally cruel, insatiable man treats her as a compliant sex toy and repeatedly creampies her, refusing to stop until she becomes pregnant.