Clarisse cheats on her husband with a vain insurance agent. Zamore, the cuckold (and a magician) wouldn't let his wife be stolen so easily. Poiret and Serrault play the rivals in this twisted love story. A poetic absurd fantasy.

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.

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.