The ambitious police officer Cruchot is transferred to St. Tropez. He's struggling with crimes such as persistent nude swimming, but even more with his teenage daughter, who's trying to impress her rich friends by telling them her father was a millionaire and owned a yacht in the harbor.

Sergeant Cruchot and his faithful comrades have been sent to the International Congress of Gendarmerie in N.Y.

The Saint-Tropez police launch a major offensive against dangerous drivers. Marechal Cruchot (Louis de Funès) relishes the assignment, which he pursues with a manic zeal. Cruchot is after an offending driver, who turns out to be Josépha (Claude Gensac), the widow of a highly regarded police colonel. When they meet, Cruchot falls instantly in love....

The whole clique of Cruchot's police station is retired. Now he lives with his rich wife in her castle - and is bored almost to death. He fights with the butler, because he isn't even allowed to do the simple works. But when one of the clique suffers from amnesia after an accident, all of the others reunite and kidnap him, to take him on a tour to their old working places and through their memories. In their old uniforms they turn St. Tropez upside down.

The bungling inspector Cruchot finds himself trying to save the residents of St. Tropez from some oil-drinking humanoid aliens. The only way to tell the aliens from the real people, besides their constant thirst for oil-products, is that they sound like empty garbage cans when you touch them. Chaos is ahead.

Cruchot's police office moves into a new building. They do not only get high tech equipment, but also four young female police officers to educate. All of them scramble to work with them -- and cause pure chaos while being distracted by the fine ladies. Then they get into real trouble when one after the other of their female colleagues is kidnapped.