When Thai girl Shui-Mei falls for nice-guy Hong Kong tourist Bon (Kwok-Pong Chan), she gets her wizard brother Laimi (Ben Ng) to use his powerful magic to help her get her man; Shui-Mei's plan backfires, however, when the spell is accidentally intercepted by Bon's three sex-mad pals, and she finds herself participating in an unexpected all-night-long foursome. After the magic wears off, Shui-Mei realises her terrible mistake, panics, and falls on a knife. Understandably upset, Laimi swears revenge...
With the majority of its sex and violence played for laughs, The Eternal Evil of Asia is far from the raunchiest or the most mean-spirited effort that the Cat III genre has to offer; that said, it still manages to be a very entertaining movie, delivering several decidedly warped scenes of a sexual nature and a reasonable smattering of cartoonish gore, all shot in typically stylish 80s/90s HK fashion (lots of neon lighting and slowly-tilting camera-work).
As the film progresses, viewers get to enjoy such silly sights as a ghost impaled on fluorescent lighting, a man so hungry that he eats his own arm, and airborne sex magic, but of all of the supernatural craziness in The Eternal Evil of Asia, the most memorable moments have got to be Cat III legend Elvis Tsui having his head turned into a huge bell-end (that even squirts urine), and an invisible Laimi receiving oral sex from Bon's sexy girlfriend May (Ellen Chan) via astral projection.
7.5 out of 10, rounded up to 8 for IMDb.