The misfit Police Academy (1984) graduates now are assigned to train a group of civilian volunteers to fight crime once again plaguing the streets.
The Police Academy's commandant will be honored at a police convention in Miami Beach. At the airport he picks a wrong bag with stolen diamonds. The "owners" want them back.
Those bumbling cadets take to the streets when three inept goons successfully orchestrate a metropolitan crime wave.
The Russian government hires the veterans of the Police Academy (1984) to help deal with the Mafia.