Two men marked by the boyhood adventures of All the Pretty Horses and The Crossing now stand together to confront a country changing beyond recognition. In the fall of 1952, John Grady Cole and Billy Parham are cowboys on a New Mexico ranch, encroached upon from the north by the military. On the southern horizon are the mountains of Mexico, where one of the men is drawn incessantly in this story of friendships and passion to a love as dangerous as it is inevitable.