Wife Kaori takes a job as a housekeeper at the home of a loan company president to repay her husband's debt. At first, she endures it, thinking, "If I can pay off the debt just by doing housework, it's worth it." But one day, she's suddenly ordered to bathe with him. Embarrassed and confused, she begins washing his back. However, it doesn't stop there—gradually, she's forced to give in and surrender her body. Betraying her husband fills her with guilt, yet she's overwhelmed by the pleasure of sex she hasn't felt in years. As these conflicting emotions of ecstasy and shame intertwine, Kaori loses herself completely, climaxing again and again.