American scientist Bill MacGregor (Warren Hull) creates a formula for a new super-light metal. Bill's discovery draws the attention of another scientist, professor Werner (Wilhelm von Brincken), as well as Bill's son, John (George Cleveland), a reporter. While John pursues an interview with Werner, he meets Sonia (Kay Linaker), another reporter. But when the FBI shows up, and Werner is revealed as an enemy spy, John and Sonia get caught up in a fight over Bill's formula.
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