In this prequel to the original, a bloody power struggle among the Triads coincides with the 1997 handover of Hong Kong, setting up the events of the first film.

Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, respectively, race against time to expose the mole within their midst.

A French chef swears revenge after a violent attack on his daughter's family in Macau, during which her husband and her two children are murdered. To help him find the killers, he hires three local hit-men working for the mafia.

A friendship is formed between an ex-gangster, and two groups of hitmen - those who want to protect him and those who were sent to kill him.

The godfather of the triad Jing Hing and his senior bosses need to select a new boss to run the daily operations of the five gangs under their control. Chuck, a lifelong member of the triad, dreams of being the elected one, but his wife wants him to leave the criminal life and spend time with their child. Wulf, a former cop, also wants take over the seat. Both will try to achieve their goal by any means necessary.

McDull has no black mask or red underwear, and certainly not supernatural powers. One day, an outerspace monster invades the Earth and makes mincemeat of the superhero sent to meet him. Now the responsibility of saving the Earth falls squarely on the shoulders of Mcdull and Risopot. Can they really save our planet? And the outerspace monster, why does he time and again invade the Earth?