Takashi Kamiyama, a polite and peace-loving high school student with an above-average IQ, unexpectedly finds himself enrolling in the notorious Cromartie High School, a haven for the toughest delinquents. Despite his mysterious reasons for joining this chaotic institution, Takashi faces a thrilling new reality surrounded by punk rebels, rowdy robots, and even gorillas. Amidst the uproar, including unexpected sightings like Freddie Mercury on a horse, Takashi strives to elevate the school's image while navigating the antics of his unruly classmates.