Marine Lieutenant Steve Landers has perfected a new bomb-release for airplanes which he is testing with the aid of his mechanics,'Singapore' Stebbins and Jack Murray. Dick Weber, one of a group of enemy agents attempting to steal the plans, is a friend of Colonel Dale, whose daughter, Linda, is engaged to Landers. Weber learns that "Singapore" and Jack are to deliver the final blueprints to the Colonel's home. Beckstrom , head of the spy ring, has some of his agents dress as Marines and obtain entry the the hangar. They get the plans but "Singapore" and Jack have overheard a conversation that indicates the spies are heading for a nearby island which is the headquarters of the espionage group.
as Pvt. 'Singapore' Stebbins
as Linda Dale
as Pvt. Jack 'Junior' Murray
as Maisie King
as Lt. Steve Landers
as Dick Weber
as Beckstrom
as Charles
as Top Sergeant
as Ciolonel Dale
as Maxson the Magician (uncredited)
as Coffee-Counter Waitress
as Master of Ceremonies
