Two men battle Indians while working to build the railroad west, and each other for the woman they both love. Jim Bridger (Dennis Morgan) and Jack Gaines (Richard Denning) are cavalry veterans re-enlisted in clearing the way for railroad construction, and convincing the Sioux nation to sign a peace treaty without an all-out war. The Springfield rifle plays a decisive part in their achievement. Gaines has to fight his own demons, and prove to himself and his wife (Paula Raymond) that he’s as good a soldier and a man as he ever was.