In this complicated western, a group of explorers head to Mexico to hunt for an Indian burial ground. The hero, who has been unjustly accused of murdering the leader of the first expedition, begins impersonating the notorious bandito El Puma. He intercepts the latest expedition just as the leader is stabbed. The real murderer then blames it on El Puma. Now the hero stands accused of two murders. The hero begins looking for the treasure buried within the grounds and for the real killer. He finds both.