Months after Crazy Horse’s savage death, Gen. Crook can’t agree with the implacable Chief Red Cloud over where the Sioux can settle. When Crook and certain officials recall the young contract surgeon Valentine McGillycuddy’s sympathetic rapport with the various tribes, McGillycuddy is made an Indian agent within a month. Taking charge of the new Pine Knob Reservation, he will labor to change Red Cloud’s determination to lead the Sioux to their old life, while a vengeful Sitting Bull waits above the Canadian line for another war.