In 1980, a crack team of Taoists (garbed like ninjas!) successfully vanquish a mob of ghosts -- except for female demon Pinkish Red, who manages to escape. Six years later, Cici Shin (Charine Chan Kar-ling) and her cousin, Lily Li (Ann Bridgewater), open a boutique and need a mirror for their fitting room. The mall security guard finds one for them in the basement but, naturally, Pinkish Red resides inside it and, when Cici cleans the mirror’s surface, the ghost is able to enter back into the real world.

Building Inspector Tony (Tony Leung Ka Fai) investigates an old abandoned building in a deserted plant site and falls victim to a restless demon, who wants to resurrect into Tony's body. However, the spirit of a young woman (Rosamund Kwan) suddenly appears, saves Tony, and accidentally sucks some of his life force, thereby, sharing his feelings and emotions. The ghost falls in love with Tony, but he wants to use her to help him woo his gorgeous colleague (Ellen Chan).

A ghost takes over a dancer's body in order to find those who killed her, and thus her revenge.

Something fishy is going on in the anti-Drug Trafficking Unit of the HK Police, and only a few honest cops know that the corruption goes all the way to the top. However, they must prove their case quickly, and by unconventional means, after they are framed for murder and drug-trafficking themselves. Dodging bullets from cops and criminals alike, the race is on to clear their names, protect their loved ones, and bring their corrupt colleagues to justice.