[1] Warren had earlier released his own re-edited version of La Momia Azteca in 1963, which he had retitled Attack of the Mayan Mummy.

[4] A psychic woman named Ann Taylor (Rosita Arenas),[5] regressed to a former life via hypnosis, leads archaeologists into an Aztec pyramid where they discover a tomb containing two mummies, one of which turns out to be a mummified Caucasian werewolf (Lon Chaney Jr.), the other a mummified ancient Aztec warrior (Angel di Stefani).

A mad doctor (Yerye Beirute)[5] kidnaps the werewolf-mummy to his lab and manages to revive him, the unwrapped creature transforming into a snarling werewolf when the full moon rises.

A hastily inserted newspaper headline alerts the public that the mummy has been killed, bringing that plot to an abrupt end.

Michael Weldon of Psychotronic Video stated that the film did not make sense since so much of the original dialogue scenes had been removed.