Texas Governor Elisha Pease sends a small troop of Texas Rangers, under the leadership of Captain Inish Scull, to the Llano Estacado in pursuit of the celebrated Comanche horse thief, Kicking Wolf. This bold Indian steals Hector, Scull's famous horse, and takes it to the Sierra Perdida to give to the notorious Mexican bandit Ahumado, feared for the horrible tortures that he inflicts upon his victims. Scull, promoting McCrae and Call to Captains and instructing them to lead the Ranger troop back to Austin, sets off on foot after Kicking Wolf, accompanied only by the Kickapoo tracker Famous Shoes. Ahumado ties Kicking Wolf up to be dragged away by a horse, and takes Kicking Wolf's companion, Three Birds, prisoner. Ahumado intends to impose a slow death on Three Birds, but Three Birds throws himself off a cliff. Scull finds the unconscious Kicking Wolf being dragged by the horse, and cuts the Comanche's bonds, which allows Kicking Wolf to survive and return to his tribe. Scull is soon captured by Ahumado, and placed in a cage, where he is supposed to die slowly.