The plot is basically 'Resident Evil'. A military experiment (the Painless Warrior project which involves developing a new virus to bring life back to dead bodies and turn them into killing machines) goes horribly wrong when a top official, Harry, accidentally contracts a disease. He returns home to Hong Kong to get help from Bell (Alice Chan), a colleague on the project and also an ex-girlfriend. Bell is less than pleased to see him, as Harry cheated on her, but gives him the information he needs.

Later Harry visits a nightclub but when the virus starts to take hold and turns him into a psycho he gets into trouble with the local triad, of which Cheap (Sam Lee) is a member. A fight breaks out and the police arrive, lead by Marco (Stephen Fung), to arrest everybody. The story now moves to the police station where the gangsters and Harry are held in adjoining cells.

Its not long before the virus has completely transformed Harry into a zombie killing machine. The virus is transferred to whoever is bitten by a carrier and soon the whole police station is swarming with zombies. Marco, his girlfriend, Cheap and Bell are the only ones in the building who remain unaffected and they have to fight their way out in the style of all the classic zombie films.

Despite ultra cheap special effects and make up the film is really entertaining due in no small part to Sam Lee's talent for comedy. In one particular scene Lee's character, Cheap, manages to avoid being eaten by hilariously pretending to be a zombie. If you're a Sam Lee fan then this is definitely worth watching as he pretty much steals the show.

There aren't really any bits that have you on the edge of your seat in terror, the film's far too light for that, but it moves along at a fair pace and there is little time to get bored. There's also plenty of gore. At times it works really well, such as in the scene where Harry rips apart a cell full of prisoners, but at others it is far too cheap to look convincing. Also the zombies act a bit too intelligently and retain too much personality to make you think that they are anything other than ordinary people in green make up.

Bio-Zombie is one of my favorite Hong Kong movies; it was a great mix of comedy and horror (as well as a bit of social satire) -- so I had pretty high expectations for this pseudo-sequel. Sadly, Bio-Cops didn't meet them. The main problem is that it takes itself too seriously. Whereas Bio-Zombie moved along at a fast pace, Bio-Cops plods along, with zombies delivering speeches about lost love and the like. This might have been acceptable if the movie could carry this dark tone visually, but it doesn't. I know Hong Kong special effects aren't up to the standards of Hollywood, but gore effects are some of the easiest and cheapest to produce (just look at the aforementioned Evil Dead) and Bio-Cops' effects just look horrible. I'm sorry, but cheap prosthetics, green slime and rudimentary CGI just don't cut it for me. I was still willing to forgive these differences, but then about midway through the movie, the filmmakers decide to start ripping off gags from other horror movies and video games, most notably Resident Evil. While Bio-Zombie did this, it did it in very small doses (such as the House of the Dead bit) -- not as the basis for an entire sequence.

This is still a fairly entertaining movie, mostly carried by the chemistry Stephen Fung and Sam Lee have together. It's just that Bio-Zombie was so good -- it's one of the few horror movies that have come out over the past few years that I actually liked -- that an average sequel comes off as a major disappointment.

I can't tell whether this film is a comedy or a horror film. Of course, the reason I got this film is because I am a fan of both Stephen Fung and Sam Lee, after their successful Gen-X Cops. Lee once again provided too much comedy. Perhaps he should become a stand up comic, because he always gets the funny roles. Look for a Young & Dangerous reference as the Triad happens to be...Hung Hing!!!! The film goes from a comedy-horror film to a tribute to Resident Evil as Fung and the radiant Alice Chan begin to blow away zombies using arsenal. The film was ridiculous, but enjoyable in terms of its comedic elements. Even the zombie effects on Benny Lai's Harry was bad (you see some of the skin peeling off...hehehehe). Anyway, if you have nothing better to watch, see this and laugh your head off while getting a bit grossed out (yeah right!!!)