Fred, a raffish safe blower, takes refuge in the Paris Metro after being chased by the henchmen of a shady businessman from whom he has just stolen some documents. While hiding out in the back rooms and conduits of the Metro, Fred encounters a subterranean society of eccentric characters and petty criminals.

In Antwerp, Belgium, in 1959, a succession of Interpol agents are gunned down without obtaining what they're looking for: a list of all the influential crooks. Only one remains, Larry Laine, who is about to show them what he's made of.

Film in two eras.1st era: They are not angels. Chronicle of a Free French parachute training camp during the Second World War. 2nd era: Terre de France. A group of paratroopers landed in Brittany sabotages the German installations.