Two adventurers and best friends, Roland and Manu, are the victims of a practical joke that costs Manu his pilot's license. With seeming contrition, the jokesters tell Roland and Manu about a crashed plane lying on the ocean floor off the coast of Congo stuffed with riches. The adventurers set off to find the loot.

• SNC
• CGIC
• Alain Delon
• Lino Ventura
• Joanna Shimkus
• Serge Reggiani
• Hans Meyer
• Jean Darie
• Jean Trognon
• Odile Poisson