A suspicious fire destroys a Los Angeles based military aircraft factory. An employee at the factory, Barry Kane, whose best friend perished in the fire, is implicated as the saboteur. Kane believes that a man that he met at the factory site that day by the name of Frank Frye is the true saboteur. Frye was acting as if he was an employee at the factory, but records show no employee by that name. With only memory of an envelope with Frye's name and address as a lead, Kane goes on the run from the police to track down Frye. Kane's search for Frye takes a turn when he meets Patricia Martin. Initially suspect of Kane, Pat ends up believing Kane's story and trusting him as a person. In their search for the truth in an effort to clear Kane's name, they discover a plot much larger and more dangerous than Kane could have ever imagined when he started his quest.