A mad doctor is running amok on the backlot of Azteca Studios. He has successfully transplanted the brain of a gorilla into the body a male human, who has developed an un-gorilla-like taste for raw meat and is sporting thick hunks of glued-on fur on his back and arms. Now the Mad Doctor seeks---for reasons naturally unexplained--to transplant a female human brain into the body of another female human. Along the way, the Mad Doc--accompanied by his evil henchmen and the ape-man--botches several transplant attempts, and earns the wrath of babe-a-licious luchadora champeen Gloria Venus (after he offs her chemist sister in a brain-swap-gone-bad) and her police detective boyfriend.
So why's the Doc goin' to all this trouble? Perhaps he wants a companion for Gorilla Boy? Heck, we don't know, but it's the setup for the rest of the picture, which is one of the most humorous and high-spirited of the Mexican Wrestling genre. As with most K. Gordon Murray Mexi-horror fare, the dubbing is always awkward, and often hilarious, though the actors seem to be enjoying themselves (especially Mad Doc, who gets to chew major scenery for the last half hour), and the direction by Rene Cardona the Elder gets progressively tighter as the film progresses--this is one of the few Mexi-Horror flicks that actually gets better the longer you watch it. There are at least two "trick" endings, a wild plot twist in the last 15 minutes (an evil lady wrestler with a gorilla's brain? Nah), and a predictably ludicrous ending. The only caveat to offer is the tampering with the soundtrack, presumably by Johnny Legend. For a couple of fight scenes---maybe 10 minutes in all--the delightfully cheesy original score is dubbed out in favor of some tepid late-'80s Rockabilly Twang music. It's not too distracting, but you have to wonder the anyone even bothered in the first place. But if you're an aficionado of Mexi-Horror or Wrestling Pictures, you will want to check out this film. It was the first of the "Wrestling Women" series, and one of the most successful. Forty years later, it's easy to see why