Seven years after a daring bank robbery involving an anti-tank gun used to blow open a vault, the robbery team temporarily puts aside their mutual suspicions to repeat the crime after they are unable to find the loot from the original heist, hidden behind a school chalkboard. The hardened artilleryman and his flippant, irresponsible young sidekick are the two wild cards in the deck of jokers.

The Russians need help in dealing with the Mafia and so they seek help with the veterans of the Police Academy. They head off to Moscow, in order to find evidence against Konstantin Konali, who marketed a computer game that everyone in the world is playing. With a sequel to the game he wants to put backdoors in all computer systems on which it gets installed, thus providing access to the police and other government systems.