Fleeing to Dodge City after killing a man in self defence Masterson finds his brother Ed (Harry Lauter) running for sheriff of the town. When Ed is killed by hired…

Duncan MacDonald, a 19th-century Royal Canadian Mountie, has to escort a group of Cree Indians back to their above-the-border reservation. His guide in this endeavor is the not-too-trustworthy half-breed Natayo.