While unloading the cargo ship Florida, West German harbour workers discover napalm bombs instead of the expected high-tech machines aboard. The American occupying forces had apparently renamed the ship en route to Germany after French workers had already refused to discharge the vessel multiple times. 

The German harbor crew likewise refuses to unpack the dangerous cargo. The Americans decide to exploit on worker Hein Jensen, who needs his wages to support his growing family after a long period of unemployment, in an effort to break the strike.