U.S. Deputy Marshal Merlin Fanshaw arrives at the Crow Indian Reservation with orders to restore law and order. But a powerful rancher and his son block the deputy’s efforts in order to retain their rigid control over the nearby settlement of Medicine Lodge. When a shocking murder rocks the town, tension and violence escalates between the Crow Indians and the settlers. Fanshaw must bring in the killer before an innocent man loses his life–or he forfeits his own.