The Navajos of the Highlands are terrified: the witch Zhenda, using her hypnotic powers, has kidnapped her son, the sachem Sagua, and her terrible black panthers tear whoever gets in her way to pieces! The vixen has allied herself with the evil tamer Koster, promising him the gold from a deposit in exchange for his services, and has subdued the primitive tribe of Sinaguas Indians, ready to arm them and let them loose against the tribe of the hated Aquila della Notte! But the pards intercept the trafficker Jim Walcott, who was supposed to supply the Native Americans loyal to the witch with guns.