Sandy Bloom

Roger Greenberg, a failed musician now making a living as a carpenter in New York, returns to Los Angeles to house-sit for his brother. He's stranded there—since he doesn't drive—until his brother's assistant, Florence, comes to his rescue. She's as much a lost soul as he is, and the pair form a significant connection—giving Roger a much-needed reason to be happy.

Lloyd and Harry are two men whose stupidity is really indescribable. When Mary, a beautiful woman, loses an important suitcase with money before she leaves for Aspen, the two friends (who have found the suitcase) decide to return it to her. After some "adventures" they finally get to Aspen where, using the lost money they live it up and fight for Mary's heart.

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.