Fur thieves, who murder trappers when they refuse to give up their pelts at a low price, occupy the attention of the Royal Northwest Mounted Police. The leader of the gang is Victor Renaud, also the mayor of the small Canadian town where the gang is headquartered. Lucky Kerrigan is broken from the mounted service for apparent disobedience to orders, which results in the death of a fellow Mountie. Lucky, working undercover, aids the Mounties in rounding up the gang and gains back his uniform, and also the love of Gabrielle Renaud, Renaud's sister who was unaware of his criminal activities.
Storm is out to wreck Ace's stage line. When Tex arrives to help Ace, Storm brings in hired killer Mule Bates. But Tex and Bates know each other and the two devise a plan to fool Storm.
