Two escaped convicts roll into the village of Happy, Texas, where they're mistaken for a gay couple who work as beauty pageant consultants. They go along with it to duck the police, but the local sheriff has a secret of his own.
Rushon is sexually pent-up and ready to take thing things to the next level with his girlfriend, Nikki. But when he calls for a date, she asks to make it a double — bringing along her brash friend, Lysterine, whom Rushon sets up with his lewd buddy, Bunz. Things go better than expected. As the evening transitions from the restaurant to the bedroom, the two men go on a madcap search for what will surely make the night complete: condoms.
Refined actress Lauren Ames finally has a chance to study with the great theatre professor Stanislav Korzenowski. Sandy Brozinsky, a brash, loud actress, decides through happenstance to also study with Korzenowski. The two women end up dating the same man (who turns out to be a double agent) and follow him across the country to force him to choose between them.
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 Duchy of Grand Fenwick decides that the only way to get out of their economic woes is to declare war on the United States, lose and accept foreign aid. They send an invasion force (in chain mail, armed with bows and arrows) to New York and they arrive during a nuclear drill that has cleared the streets.
Francesca always attracted weirdos. When one of her stalkers is found dead, she looks for comfort from her best friend, Maxi. Meanwhile, Maxi’s grandfather, Jack, a disgraced Rabbi, comes across a reclining chair containing a Dybbuk inside. Jack and his voodoo sorceress partner try to find out where the recliner has been delivered while exploring Jack’s newfound gift for communicating with the other world. Meanwhile the reclining chair becomes enchanted by Francesca and starts committing crimes of passion.
A shy simple traditional girl leaves her family in India for her new husband in London, where she meets a shameless flirt and a complicated party girl.
Sidney and Dre can attribute their lifelong friendship and the launch of their careers to one single childhood instant... witnessing the birth of hip-hop on a New York street corner. Now some 15 years later, she is a revered music critic at a national magazine and he is a successful, though unfulfilled, hip-hop record company executive. Both come to realize that their true life passions will only be fulfilled by remembering what they learned that day on the corner.
Duane recovers from his delusional breakdown to find his freakish basket-bound brother Belial will soon become a father. But not everything is joyous as the once tight knit brothers no longer seem to trust each other.
Stanley is a bellboy at the Fountainbleau Hotel in Miami Beach, where he performs his duties quietly and without a word to anyone. All he displays are facial expressions and a comedic slapstick style. And anything that can go wrong, does go wrong when Stanley is involved. One day, Jerry Lewis arrives at the hotel and some of the staff notice the striking resemblance.
According to a high school's lore, the "Dirty Deeds" are a daunting list of dares almost no student has ever completed. To win the student body's respect and get noticed by his crush, senior Zach is determined to finish the list in the allotted 24-hour time period. As the school's bullying jocks try to thwart him at every turn, Zach embarks on a wild journey, highlighted by beer swilling, grand theft auto and the snagging of an ex-homecoming queen's bra.
The American comedian/actor delivers a story about the alternative Hip Hop scene. A small town Ohio mans moves to Brooklyn, New York, to throw an unprecedented block party.