A gang of horse thieves are able to operate because the crooked local sheriff is in cahoots with them. When Tom Mix's beloved horse Tony Jr. is stolen, he steps in to break up the gang.
With the Sheriff and the Vigilantes not bringing in the Paint Horse gang, the Governor sends for Tom Munroe. He is soon on to their game. After their robberies they ride off on different mounts while Casino hides the paint horses. Tom learns the name of the leader when Casino confesses but he and a few men are then trapped in a ranch house when the gang attacks.—Maurice VanAuken <mvanauken@a1access.net>