Duff MacCallister fled the Scottish Highlands for a new world in Wyoming Territory. Betrothed to a good woman, Duff has the bad luck to be standing in the Chugwater Bank when a violent robbery explodes around him. With one man dead by Duff's gun, and another under arrest, a team of bandits swarms outside of town. As witnesses, Duff, a banker, and a beautiful barmaid are whisked into the hotel for safe-keeping as the outlaws threaten the defenseless town with a bloodbath. Except no MacCallister has ever run from trouble.