A daydreaming businessman named Thelonius Pitt takes a vacation in the Redwood Forests of California. The morning after he arrives, he meets a beautiful, mysterious woman named Melanie. She happens to look just like the woman he keeps seeing in his dreams. Thelonius and Melanie meet each other on the shore of a nearby river late at night. Melanie's husband finds them, and attacks Thelonius. Melanie pulls out a pistol and fires 3 shots, knocking her husband's body into the icy river below. The nightmare has begun...

When 15-year-old Sonny Wisecarver has an affair with his older neighbor Francine and then runs off to marry her, a stern judge has the union annulled. Then, when Sonny finds himself before the same judge after getting involved with another woman in her 20s, the publicity from this case makes him the object of affection for millions of young women

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.

A middle eastern female terrorist is captured by the CIA in Greece, after an attack on a marketplace. Transported back to the USA, the terrorist undergoes an operation where she is transformed into a cybernetic killing machine. Now the CIA have a secret weapon to send back to the Middle East, but how long can they control her?

Coming from a police family, Tom Hardy ends up fighting his uncle after the murder of his father. Tom believes the killer is another cop, and goes on the record with his allegations. Demoted to water-way duty Tom, along with new partner Jo Christman, navigate the three rivers looking for clues and discovering bodies. This time the victims are women Tom knows, he must find the killer to prove his innocence.

A wealthy Beverly Hills resident who has just become a widow, Clare Lipkin temporarily takes on her friend Lisabeth as a house guest. As the two women deal with their upper-class woes, Clare's driver, Frank, and Lisabeth's servant, Juan, make a wager to see who can be the first to seduce the other's boss.

Three young women looking for adventure get jobs on a dude ranch. The film follows the adventures of three high school girls the summer after they graduate. After their jobs at a dude ranch fail to work out, the girls head to Lake Tahoe where they meet Talia (Cristen Kauffman). Talia's boyfriend Roscoe then helps the girls get a job at a casino which leads to trouble.