After so many years, exposing herself to the opposite sex again... Could a woman her age still be desired by men? This is the story of middle-aged married women in their fifties secretly accepting strange men's cocks behind their husbands' backs. Mayumi, 50 years old, married for 25 years. In a hotel room, she shyly answers a man's questions. It's been over a decade since she last had sex with her husband after the birth of their second child. Yet she harbors a secret she can never tell him. One day, she goes with three mom friends and their children to a suburban pool. There, she gets picked up and surrounded by young men in swimwear, making her feel youthful again. Drinking alcohol offered by them, she cools off in the pool while watching the kids—but underwater, one of the guys gropes her ass. That sensation lingers in her mind, and now she shyly exposes her body in front of the camera.