Chow Mei Si (Diana Pang) is a late-night radio DJ who receives an ominous warning from one of her callers. The caller, named "Hungry Wolf", says that he's going to blow up a hospital...and he does! Chow Mei Si tries to warn cop Wong Chi Ming (Michael Wong), but he's skeptical. That is, until the caller threatens to blow up a kindergarten and promptly follows through. Now Wong and his partner (Joyce Ni) must protect Chow Mei Si from the bomber before he can claim her as his next victim!

Set some time after the original 'Heroic Trio,' the city has been devastated by a nuclear attack. An evil deformed villain controls the city's scarce water supply, exerting influence over a popular leader and a militarist colonel.

After being thrown out of the police academy, Debbie Fung (Ellen Chan) gets a new chance but instead the proposition is to go undercover. Accepting the mission to get close to tycoon Lau Fuk Tin (Michael Wong) as he's suspected of a number of murders of women, under the disguise of Maryanne, Debbie quickly gets close to Lau. Going so far as getting almost permanent residence with the man, Debbie witness horrific things on the grounds. Despite, affection starting to develop towards her target.

Sung, a renowned solicitor in China, has everything that a man could ask for except a son. The problem wasn't that his wife could not bear him a son but that each child born could not live past one year. How does Sung change his fate?

Hsiong, a young narcotics officer, hooks up through comic accidents with a party girl named Witty. She shops, plays mahjongg, and charges him for every kiss, and they are in love. When he dies in the line of duty, his ghost stays around for a few weeks, hoping to get Witty's attention, trying futilely face to face and by phone, and then through a relative of hers who claims to have occult powers. Through this shadow cop's investigations, it comes to light how he died and where $10 million is that was the cause of his death. Before he disappears into the void, they leave each other final messages. Can their last wishes come true?

comic book illustrator Simon Loui loses job and girlfriend is pissed off about him. So he gets drunk and wishes upon a star ... just as a spaceship is flying overhead, and an alien buzzes out and follows him home. Using his comic drawings on the walls as a guide, the alien assumes human form (to become Jacqueline Law) and calls herself Mah-Hey. Girlfriend gets understandably upset and walks out. Artist and Mah-Hey get jobs in a new firm, where she gives him support and help to succeed where he failed before. In between, Mah-Hey drinks water by the large bucketload, occasionally helps artist win fights, and looks into his dreams while he sleeps.

Powerful Four boasts an all-star cast and chronicles the rise of four semi-corrupt Hong Kong police detectives during the late 1960s.