An enigmatic woman recruits a gang of specialised criminals to rob a US Army payroll armoured truck bound for Marseilles. However, things don't go exactly as planned.

Vicky de Berlin, a female gangster, haunted by wartime memories , runs a floating night-club in Brussel. Marcel, her partner and lover, is in charge of the banknotes forgery manufacture concealed in the bottom of the boat. He decides to rob the Bank of Belgium and exchange a huge sum of counterfeit money for its equivalent in genuine one. But things get complicated when Yoko, the she leader of another gang and her lover The Bug interfere...

Vallois, a vice inspector for the Paris police, takes special interest in the plight of drug-addicted Lucky (Najda Tiller), whom he considers to be more victim than criminal. Taking it upon himself to wean Lucky away from narcotics, Vallois also wins her love -- and, incidentally, smashes the dope ring responsible for her addiction.

In Paris, a gold smuggler is at war with other local gangsters who want piece of the action. Then the mob shows up and makes things worse. And an undercover US Treasury Department agent is trying to infiltrate the smuggling business.

Young blonde woman seems to destroy everyone she comes in contact with.