During the early 1970s, FBI agent Ray Levoi is assigned to aid in the investigation of a political murder, that of tribal council member Leo Fast Elk (Allan R.J. Joseph), on a Native American reservation in South Dakota. Agent William Dawes, Ray's superior, has chosen him for the task due to his mixed Sioux heritage, which might assist in the inquiry as they interview local townspeople. Ray is partnered with agent Frank "Cooch" Coutelle, who has diligently worked on the probe looking to apprehend a prime suspect: Aboriginal Rights Movement radical Jimmy Looks Twice. While helping Cooch track down the suspect, Ray gradually becomes sensitized to Indian issues, partially from his attraction to Maggie Eagle Bear, a Native American political activist and schoolteacher.