Tracy "Tre" Stokes (NICK CANNON) is a 23-year-old maverick L.A. bike cop who's yet to live up to the reputation of his cop father, all to the disappointment of his superior, Captain Victor Delgado (CHEECH MARIN), but amusement of detective Richard Gallecki (IAN GOMEZ) who enjoys riding the younger cop. His latest episode of overstepping his boundaries and duties has him in hot water with Delgado, but a higher-up authority in the department thinks his young looks might work to their advantage.
It seems that a stolen vehicle ring is operating around an elite private high school and a student who was doing his own detective work on it has been murdered. Accordingly, the department wants Tre to go undercover as a student and find out who's responsible for the crimes. Having never finished high school, Tre is reluctant, but agrees to the assignment and enrolls at the academy, with his true identity secret from Headmaster Powers (HUGH BONNEVILLE), Spanish teacher Karen Lopez (ROSELYN SANCHEZ) and students such as Rob Donovan (SHAWN ASHMORE).
Although Tre and basketball captain Rob initially clash, they soon become friends when the undercover cop helps Rob in regards to ex-classmate Eddie Murdoch who seems to be up to no good. With Gallecki and his partner Lisa Brooks (KELLY HU) providing back up, and bench warmer Alex (JOHNNY LEWIS) providing some info, Tre gets himself deeper into the school's cliques, all while hitting on Ms. Lopez and trying to prove his worth as a real cop by nabbing the bad guys.