The nerds are now in control of the university, as a result of Lewis Skolnick and the rest's actions in the two previous movies. A new generation of sportsmen arrive, however, determined on winning the school back. The principle, himself an ex-nerd fighter, helps them, and the nerds return to suppression. Harold Skolnick needs help from his uncle Lewis, the hero of the first two movies. Lewis, however, are not too proud of his nerd past, and won't reveal any of it, much less help his nephew. However, his wife makes him change his mind, and with help from his friends from the first two movies, they start the fight to win the school back, using classic nerd tricks.

The Russians seek help in dealing with the Mafia from 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.

The Russian government hires the veterans of the Police Academy (1984) to help deal with the Mafia.

In an old school Las Vegas casino, its top gambling jinx breaks his curse when he falls in love, much to his boss' consternation.

In the nuclear ravaged wasteland of Earth 2087 water is as precious as life itself. The isolated Lost Wells outpost survived the holocaust and the inhabitants guard the source of their existence. Now an evil cult of renegades want control of their valuable water supply. And the villagers are no match for such brute military force. Only one man can help the stricken community - a mercenary living in a distant cannibal city. But even he, and his strange henchmen, may not be able to survive in the world gone wild.

The Russians need help in dealing with the Mafia and so they seek help with the veterans of the Police Academy (1984). They head off to Moscow, in order to find evidence against Konstantine 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.