A rancher is murdered after discovering that 40 head of his cattle have been rustled. A neighboring family is accused of the crime and flees across the border, then tries to find the real killers to clear their name.

Reporter Speed Morgan helps Flash Barrett escape from the police and this gets him into Flash's gang where he poses as a gangster. Flash and his gang head west guning for Bill Miller who failed to send some diamonds on to Flash. Speed hopes to bring Flash to justice but is in trouble when his true identity is revealed.

As Powers is dying he tells Lee to look for a man with a girl named Mitzi. Heading north by dog sled as Curly the Kid, he finds her and her friend Lucky. But Flash is another friend and Lee is in trouble when his true identity becomes known.