Yuna and her husband live in her brother-in-law's house. Yuna is raped by him as material for his novel, and she falls into depravity. She is given a vibrator and urinates, and a delivery man forcefully thrusts his penis into her. However, even though she knows it's unpleasant, she feels pleasure. And finally, she has sex with her brother-in-law in front of her husband. It is the worst situation that makes her feel the best. That's what a fallen wife is like...