Despite being a mild-mannered and pacifistic high school student with a slightly above-average IQ, Takashi Kamiyama decides to enroll at Cromartie High School, a notorious breeding ground for tough delinquents. His motives for doing so are kept confidential. However, one thing is certain - Takashi will never have another uneventful day since he finds himself surrounded by mohawked punks, obnoxious robots, gorillas, and even Freddie Mercury riding a horse down the corridor. Follow Takashi as he sincerely attempts to improve the reputation of his new school while his classmates are determined to cause chaos. He is essentially a hard-boiled rabbit in a den full of hungry lions.