Sure-Fire Flint: Sure-Fire Flint, an energetic chap just returned from wartime military service, meets June De Lanni, the girl of his dreams, while working as a cabdriver and busboy. Her father gives Flint a job in his factory, but Dipley Poole, who hoped to marry June, becomes jealous of Flint's success and attempts to rob the company safe. June is trapped in the safe, but after a series of adventures, Flint arrives in time to rescue her.