A newspaper reporter stumbles upon German spies after a new alloy, an experimental metal that is lighter than aluminum but stronger than steel.
(from IMDb) The Rangers are after Hadley and his men and have planted Johnny Revere into his gang to warn them of his raids. But Hadley realizes he has a spy in his group and gets Trigger Dolan to join the Rangers. It's not long before Trigger spots Johnny as the spy. Johnny is captured and a fatal accident is planned to finish him off.
