An unknown gang has again broken into a van containing money from the European bank. Banker Sam Hamilton decides to use an armoured car for the next money transport. He hires racing driver Charly Allan as the driver. Allan is invited to Hamilton's house for a party. During a dance with the banker's daughter Bessy he is attacked by bandits, pushed to the ground and Bessy is kidnapped.
An international gang of thieves and swindlers decide to move their criminal operation to the Teutonic city of Cologne, but Tom Wilkens, one of the best agents of the international police, is not far behind and leads an investigation to unmask the criminals.
