In exchange for helping writer-adventurer Lawrence Colby smuggle 300 watch parts into Paris from Switzerland, Martine Randall asks Colby to help solve a complicated situation involving her friend Sabine Manning, a well-known author of sex novels.

Four strangers are thrown together in a carpool when a bag of money, almost a million dollars, falls from a Brinks truck into their path. Because of circumstances, they are unable to turn in the money, and they struggle over what to do. They are pursued by thieves, the mob, and the police.

From his prison cell, young Alan Musgrave relates his experiences of the previous year dedicated to fulfilling every whim of beautiful and self-absorbed high school senior Barbara Ann Greene.

Four losers borrow money from gangsters to bet on a "sure thing", but lose. The gangsters go after them to get their money.

Newly-promoted if none too happily married Howard Brubaker leaves a rowdy company party early with the stunning Catherine, whom it turns out is herself unhappily married — to the boss. They spend an innocent night in New York becoming more and more attracted to each other, so that when Catherine announces she intends to leave her husband and return to Paris, Howard asks to go along too.

In a research lab, a scientist's pet chimpanzee mixes up an invisibility formula. A young woman accidentally drinks the solution and becomes invisible.

Simon Watterman, a space archaeologist, discovers the "Munchies" in a cave in Peru. Cecil Watterman, Simon's evil twin brother and snack food entrepreneur, kidnaps the creature. What Cecil does not know is that the creature, when chopped up, regenerates into many new creatures and are they mean!

Inspector Clouseau disappears, and the Surete wants the world's second best detective to look for him. However, Clouseau's enemy, Dreyfus, rigs the Surete's computer to select, instead, the world's WORST detective, NYPD Sgt. Clifton Sleigh. Sleigh obtusely bungles his way past assassins and corrupt officials as though he were Clouseau's American cousin.