Set against the panoramic backdrop of New Mexico, Sonora, Arizona and California in 1867, Jubal Quinn is desperate. He's a black trooper in the newly formed 10th Cavalry and has been accused of murdering a white man. Behind bars and due to hang his only chance is to escape from Fort McCain's stockade with the help of Billy Songboy, a wayward half-breed Kiowa teenager. Hot on their heels is Lieutenant Otis Grey, a man whose devotion to duty has turned to obsession. Blasting a trail of blood through the Southwest, not even the love of a beautiful Mexican girl can deter Otis Grey. The chase can only end when either he or Jubal Quinn is dead.