The principal of McKinley Grove High School and her two new assistant principals have been given a strict quota of 20 detentions per year. But when the entire student body seems to have a gift for breaking rules, keeping under their quota is no easy task. As they desperately try to maintain order, the administration goes face-to-face with a chronic heartbreaker, the worst cheater ever, a ruthless Girl Scout cookie mogul, the captain of the Cat Football League, and many more in this cavalcade of hilariously bad behavior.