Former juvenile delinquent Onizuka finds himself thrust into to role of high school teacher, facing students who behave just as he used to and an administration that doesn't trust him. Using the brash an unorthodox methods he picked up in his youth, Onizuka manages to reach through to his kids and help them with their problems. Before he can become a full instructor, he's got to work as a student teacher to earn his credentials. Onizuka may think he's the toughest guy on campus, but when he meets his class full of bullies, blackmailers, and scheming sadists, he'll have to prove it.