These filmmakers understood what they were making - a monster nudie horror movie set in a woman's prison. They got an incredible amount of effects and action out of their tiny budget. Having the amazingly endowed Yurizan Beltran and the gorgeous Eva Derrek around to provide their own form of special effects also isn't a drawback.
The script has fun with the genre and the limitations the filmmakers faced. It is loaded with lines like "It was the silver flakes in the vodka that killed the werewolf - well getting set on fire and falling off a cliff didn't help". The plot is straightforward - a pretty American girl(Victoria DeMare), out camping with her boyfriend, gets thrown into prison for his murder after a werewolf tears her boyfriend to pieces. She dispenses with the werewolf using the expensive vodka her boyfriend had bought - "it's got the silver flakes in it!" - but not before being bitten herself. Her boyfriend, a la American Werewolf in London - returns as a zombie to explain her plight, and that she must die before the next full moon.
The prison she is in is more brothel than penitentiary. At one point the warden (Domiziano Arcangeli, very good in the David Keith role) says to his dominatrix head of discipline (Jackeline Olivier, delicious in the Sybil Danning role) "we're running low on prisoners - go out and round up some more". Olivier's character trades feel-ups for cigarettes (imagine what you can get for a full carton), and fortunately the filmmakers found a batch of well endowed pretty inmates who have no problem getting naked. Viewers will get treated to scenes of inmates "comforting" each other, girls staked in the sun licking the sweat off each other's bodies, and so on. The only thing missing is the shower scene. WWIAWP, when the wolf is not on the loose, is an unabashed T&A flick, and good for that. Anything else would have been a disappointment.
When the wolf is on the loose it becomes a gore fest that only Joe Bob Briggs could appreciate. Bisections (by prison bar), dis-arming of guards, heads ripped off, disembowelments, coitus evisceratus, and monsters bursting into flame are all part of the fun as the moon comes up and the pretty American girl ain't gonna take it anymore. It would seem like they spent the entire budget on corpses and fake blood.
The movie actually goes on a little long, and there are too many scenes of girls escaping prison and running through the scrub until finally the sadistic warden turns into Carl Denham and puts the monster on display in his sadistic little cabaret (with the same results Denham got in King Kong), but this is a movie that delivers on exactly what it is supposed to be. If you like this sort of thing, this will be up your alley.