On a morning commuter train, a man suddenly approaches an office lady (OL) who is dozing off and gropes her inner thigh. Awakening to the molestation, the OL violently beats him inside the train car before he escapes. Later, she discovers this man has been appointed as her new department manager at work. Seizing his secret, she flips their power dynamic, humiliating and treating him like a dog. The OL then appears at a university as a lecturer for a campaign against molestation, delivering a lecture on eradicating groping crimes. When students ignore her, she becomes furious and administers corporal punishment to teach them the severity of their misconduct. After disciplining two students and forcing them to repent, the OL continues to assert her uncompromising sense of justice.