The last bushrangers in Australian history, James and Patrick Kenniff, were at the height at their horse thieving operation at the turn of the 20th century. In One, troops cannot pull the Kenniff Gang out of the ranges and plains of Western Queensland - the brothers know the terrain too well, and the locals are sympathetic to their escapades. When a policeman and a station manager go out on patrol from tiny Upper Warrego Station and disappear, Sergeant Nixon makes it his mission to pursue the gang, especially, Jim Kenniff, who becomes for him an emblem of the violence that resides in the heart of the country.