Sisters pursued by their stepbrother's debt collectors. One after another, these unfortunate girls become playthings. Interspersed with lesbian scenes, the story portrays the two struggling to survive in utter despair. The loan shark's cruel demand for impossible interest payments intensifies the tension: "Shake your hips more. Every shake is worth ten yen. To pay off the interest, you'll have to shake a hell of a lot more than that."