The city is in need of more police officers, so the mayor decides to alter the requirements for acceptance into the Police Academy. Among the new cadets is Moses Hightower(Bubba Smith), a gentle giant who was a florist. Leslie Barbara(Donovan Scott), who is tired of being picked on. Laverne Hooks, a mousy, meek voice person. Karen Thompson(Kim Cattrall), a socialite, who hopes that it'll allow her the opportunity to meet some unusual people. Eugene Tackleberry, a guy who likes to discharge his weapon. Larvell Jones, a human sound effects machine, who was met at the police station by Carey Mahoney(Steve Guttenberg), a guy who is basically a good guy but has a little trouble with authority figures, a retaliates by committing outrageous acts that get him arrested. He is fortunate that police Captain Reed is a good friend of his father and has been bailing him out but now Reed thinks that jail is what Mahoney needs but Mahoney disagrees. Reed suggest that Mahoney join the police academy but must complete the 14 week course or else he will be sent to jail. So Mahoney brings Jones with him hoping that he can help Mahoney get thrown out. It also seems that the police chief doesn't agree with the mayor so he instructs Commandant Lassard and Lieutenant Harris to encourage the bad apples to quit.