It's 1971 on a remote outpost of the Navajo Nation near Monument Valley. Lieutenant Joe Leaphorn of the Tribal Police is besieged by a series of crimes. The closer he digs to the truth, the more he exposes the wounds of his past. He is joined on this journey by his new deputy, Jim Chee, who also has old scores to settle from his youth. Together, the two men battle the forces of evil, each other and their own personal demons on the path to salvation.

The chaotic and violent struggle to control wealth and power in the North American fur trade in the late 18th century. Told from multiple perspectives, Frontier takes place in a world where business negotiations might be resolved with close-quarter hatchet fights, and where delicate relations between native tribes and Europeans can spark bloody conflicts.