Nana, who works for a major railway company, acts as a decoy to crack down on molesters. One day, she catches a molester who approaches her carelessly. There, she meets Kazuo, a young man who appears as a witness. She is impressed by his righteous actions, but one last word he says, "I like molestation too..." that sticks in her mind... A few days later, while commuting to work, Nana meets Kazuo and he suddenly starts groping her crotch. She resists his sudden actions, but her body gradually heats up, despite her feelings...