At the break of dawn, the eastern wall of the Yuma Territorial Prison is blown to pieces and the outlaw known as Ryleigh Shivers escapes into the blistering crag. Reunited with his old band of brigands, he sets out to take his revenge against the man who stabbed him in the back and made off with the spoils of a decade's worth of bank robberies.Meanwhile, in the mountain town of Grizzly Falls, Fionn Branagan is struggling to keep the peace between a degenerate workforce and a growing community of Chinese immigrants threatening to unseat them from their posts in the local silver mine. When it is revealed that the Chinese have procured a stockpile of munitions, stoking fears of a civil conflict between the two groups, Fionn is called to intervene, using his position in the priesthood to reorient their violent dispositions. But as tensions escalate and the threat of war seems imminent, the town prepares itself for the end of days.Riding into that apocalypse is Shivers and his gang, sparking their way toward the powder keg and priming it to explode.