"In 1879, the notorious horse thief Doc Middleton rules the Niobrara rough country west of Holt County, Nebraska, with a loose affiliation of young outlaws, dubbed the Pony Boys. Albert "Kid" Wade, August John, Windy Barnes, Boots Harper, and a dozen other amoral roughnecks spent their days stealing horses, raising hell, and generally having the time of their lives. But nothing lasts forever, and the unorganized territories west are succumbing to...