A United States Marshal, Steve Landry (Charles Starrett), is appointed to serve in the town of Rim Rock, which he quickly finds is ruled over by a lawlessness element who prefer the town be wide open. When the outlaws are out of his jurisdiction, he assumes his role of "The Durango Kid" to bring them to justice. But he leaves tracks that appear to be just what the gang needs to rid themselves of both the marshal and Durango.