While traveling through the Comanche Mountains region of Texas , Tex and Kit discover a group of adventurers exploiting the religious superstitions of the Comanches. The bandits have passed off one of their accomplices, duly dressed up for the occasion, as the "Holy Panther" , sent by the "Great Spirit" . Strengthened by this power, they enslaved the Indians to make them extract the gold of which the region is rich. It will be up to father and son to put things right and free the Comanches from their captors.
