Reiko and her husband live with her father-in-law. Her father-in-law, who is aroused by Reiko's sex appeal despite his age, gives her money to buy a house so that they can live together as a married couple, and begs her to show him her naked body. Reiko reluctantly complies, and her father-in-law attacks her. He has his friend record the scene and plays with Reiko as he pleases, making the old man, who doesn't have much time left, go even more out of control...