October 1865, United States Deputy Marshal Wounded Hawk, delivers a prisoner to the high-country settlement of Estes Park. He ends up spending the night in a cell as no hotel or boarding house would let him stay in one of their rooms. The price for being a half-breed was high in those days.
Horace Ghent, his nephew Obe, and their gang of miscreants plan to stick up the Bank of Estes Park. Cash in hand, they'll ride into the valley below Estes and beyond the mountains on the other side. These small mountain communities that cater to the idle rich hadn't the grit to tackle hardened men, or so Horace believes.
The desperate men rob the bank and flee into a deep valley in the Rocky Mountains, but hadn't planned on Wounded Hawk being in Estes Park. Deputy US Marshal Wounded Hawk and a posse were hot on their trail. No sane person wants that half-breed Crow on their trail.
But no one ever accuses Horace Ghent of being sane.