As a resurgent population moves west and north from the more settled places that had once been the Eastern Seaboard and Gulf Coast of the United States, they drive tribesmen-Cree, Arapaho, and more-before them. On the run and desperate to find new homes, the tribes slaughter entire populations to claim their lands. The Trappers are innocent of this until Jack Monroe, banished years before for murdering a fellow Trapper, arrives, urging them to flee their ancestral home, the Trappers do not listen until nearly too late, until the first enemy arrows have found their marks.