Beautiful young bride Kaori lost her husband at an early age. Her brother-in-law Jiro, driven by deep-seated jealousy toward his deceased older brother, rapes her. Watching the act from the shadows, her father-in-law confronts Kaori about her relationship with Jiro. He subjects her to various erotic examinations—fondling, oral stimulation, and vibrator torture. Unable to endure the pleasure, Kaori climaxes repeatedly while confessing everything. To teach her obedience, the father-in-law binds her tightly with shibari rope. Yet Jiro continues to assault her again and again, and soon Kaori is also taken by her father-in-law.