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.
Crazed scientist Herbert Von Krantz has invented a device to sterilize all nuclear weapons -- and a mad herd of rival spies are desperate to get their hands on the device, including a sect of bald, turtleneck-wearing assassins.
