After serving his time for a crime he did not commit, ex-convict Jimmy Doyle is determined to go straight for the one he loves, Nancy Preston. Thereafter, Doyle notifies the man who framed him, Detective James Tierny, that any further false accusations will result in his death. Double-crossed by former pals, Doyle is sent back to prison but escapes in time to rescue Nancy from Dave Monteith, one of the colleagues who betrayed him.