Hasegawa-san is so beautiful that you can't help but turn your head if you pass her on the street. But her problem is that she has little experience with men. She has dated several men since her school days, but they were all herbivores and she was never satisfied with sex. Furthermore, her current husband is not that proactive in her sex life, and she was frustrated every day. One day, she encountered a molester on the train, which awakened her hidden sexual desire. She can't forget the excitement, and whenever she remembers being molested, her vagina throbs. She was unable to suppress her overflowing sexual desire this time and volunteered to appear in the film.