"I've been deceiving myself with masturbation for a long time, but it feels empty. I want to have proof that I was a woman at the end of my life..." Mature wives in their fifties secretly accept other men's penises... Tomie, 50 years old, married for 25 years. In a hotel room, a woman who wants to appear in an adult video is being interviewed... The mature wife has come without her husband's knowledge. She says she wants to confirm her true self as a woman at the end of her life. Her interest in sex first blossomed when she was an elementary school student, triggered by the indescribable pleasure she felt when the saddle of a bicycle rubbed against her crotch. Since then, she has developed the habit of playing with her crotch in secret. She knew it was wrong when she was a girl, and even after she got married, but she couldn't stop. Feeling empty that even after turning fifty, she can only satisfy herself like before, the mature wife opens her legs to a man she meets for the first time...