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.

While Yeung Kam Wing is trying to remove all connections between the mob and him, his actions are being carefully observed by Lau Kin Ming, who bears a personal grudge against him.

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.

Keen young Raymold Avila joins the Internal Affairs Department of the Los Angeles police. He and partner Amy Wallace are soon looking closely at the activities of cop Dennis Peck whose financial holdings start to suggest something shady. Indeed Peck is involved in any number of dubious or downright criminal activities. He is also devious, a womaniser, and a clever manipulator, and he starts to turn his attention on Avila.

In the early 70s, a rather backwards young soldier with serious family problems finds himself stationed in a small village in Spain's Levante. Secretly in love with a young village girl, Pere slips into her room one night. When he is discovered, the soldier reacts with spontaneous violence, creating an embarrassing problem for the military that the brass decide to handle--expeditiously-- as "an internal affair."

A skilled police detective in a case involving the strange, sadistic murder of a young prostitute who has been killed in exactly the same fashion as a young nightclub singer in Saigon during the Vietnam War. At the same time, the detective attempts to ferret out corruption in the police ranks.

Having fallen in love with a girl at first sight, a young man in a bar is tormented by doubts: should he approach her or not.

Harry Raymond, Canada's ambassador in Moscow, and his wife Marianne, who is in the early stages of Alzheimer's-related dementia, are summoned back to Ottawa by Michael Riordan, the Minister of Foreign Affairs, where Raymond is interrogated by Royal Canadian Mounted Police officers Daniel Jackman and Greg Mahavolitch, and defended by his lawyer daughter Diana Marsden. Riordan is planning to run for the leadership of his political party following the recent announcement that incumbent Prime Minister Prescott is stepping down due to poor health; both he and his wife Juliet are anxious to avoid any taint of scandal that may ruin his path to the Prime Ministership, but the investigation takes a turn when Raymond reveals both that he is gay and that he knows the secrets that may bring Riordan's career down as well.

A famous rural playboy teacher and a Russian wife Grande is already in a deep affair. The two, who were trying to avoid her husband's eyes and bring a thrilling meeting, eventually get caught by the husband, and he who loves Grande so much, cannot bear to be angry with Grande. In the end, he wants to take revenge by persuading the teacher's girlfriend, Soon-sil, a fool in the neighborhood to have sex with him.

What begins as an innocent art class becomes a steamy triangle of erotic passions and forbidden love. A beautiful Japanese girl becomes the object of obsession in a devious relationship between the wife of a German diplomat and her husband.

After attending esoterical studies with a wise man, Cagliostro, a mysterious Italian count, received the gift of supernatural powers. He started to travel all over Europe to heal the poor. But he is also a member of a pre-revolutionary lodge the aim of which is to give freedom to the populations of Europe. This cannot be tolerated by the 18th century's establishment and bought the Pope and the regal house of France try to eliminate him. So Cagliostro is locked up in a castle, while his wife is killed. But when in 1795 the door of his cell is opened there is nothing inside but a sword...

Spoof of the Hong Kong Blockbuster Infernal Affairs, the film is based on a bizarre and nonsense war between the police and the triads. Lek Sir sends Keung, Yan, and Fatty undercover inside Sam's garage to get evidence of any crime Sam has committed, so Lek can win back the heart of Sam's wife Mary.