The great Comanche people, once considered by military experts to be the finest mounted fighting force in the world, were surrendering to the U.S. Army. The last to surrender were the Quahadi people led by the famed “War Chief” Quanah Parker and were relegated to a reservation made up of Comanche, Kiowa and some Apache people in the Southwest Indian Territory. But reservations were not prisons, and many of those who lived there simply left to hunt or wander and often they attacked isolated ranches and buffalo hunters encamped in areas that once had been the great Comanche Nation.
In 1877, just such a group of Comanche fighters left the reservations with the aim of clearing the land of any white settlers they found whether man, woman or child. This group, led by a boyhood friend of Quanah Parker; a Comanche warrior who has come to be known by his people as the man who “Killed-His-Horse,” has now attacked and defeated an army patrol. Emboldened by their success, they are wandering over west Texas, attacking anyone they find on what was once their tribal land.
Caught in the middle of this Comanche war is a Deputy U.S. Marshal, Tomas Killain who witnesses first hand the brutality being meted out against those who dare to make homes on the land that once belonged to the free-roaming Comanche. Discovering a wounded rancher named Simon Coulter, his injured son Zack and Simon’s beautiful daughter, Jennifer, Killain leads them across a bleak and waterless landscape toward the only reliable source of water between the Coulter ranch and safety to the north. There, they discover others who are thinking only of survival.
Killain finds himself cast as an impromptu commander of a bedraggled and outnumbered group of settlers and soldiers being decimated in relentless attacks by Killed-His-Horse and his followers. In the midst of this terrifying struggle, Killain’s thoughts are turning more and more towards Jennifer, desperately trying to find a way to guarantee her survival even if it means his own death, in what will one day be known as the “Battle of Fortune Wells.”