Chitose works for the railway security unit, spending her days conducting undercover investigations to eradicate molesters. Despite her frustration toward the ever-present gropers, she remains dedicated to her job. One day, a man suddenly approaches her and makes her climax before she can even scream. Overwhelmed by the sensation, her entire body trembles with pleasure—an unforgettable experience. Unconsciously, a new desire begins to stir within her. Then, that same man appears before her once again—