Jack Kilmeny, the heir to a British dukedom, owns a gold mine in the American west with his partner Curly Brandon, another English nobleman. Lord Farquar, the owner of a powerful British mining company, sends agents to steal their mine, but Jack fights them off. He soon meets and falls in love with Farquar's daughter Moya after saving her from a runaway wagon. Meanwhile, Curly hooks up with a disreputable dance-hall girl and Jack winds up being accused of a robbery that Curly committed to please his girlfriend. Escaping capture by the sheriff, Jack must prove his innocence of the robbery charge and stop Moya's wealthy suitor, Bobyan Verinder, from stealing his mine.