Two Cops, one young and hotheaded, the other aging and by-the-book, are teamed up to break a case involving a series of Jewel heists by a ruthless young gangster and his illegal immigrant gang.

After a tragedy occurred in a shooting, a policeman called Dan is dismissed from his position, this causes him to lose his sanity and begins a rampage throughout the city

Fai Chuen is a young man who wants to rise in the triad of Hong Kong. He's tough; he's respected by his friends; he loves Apple, daughter of his boss in the small-time Hung Lok gang in Wanchai; and, he encourages the studies of Chun, the son of his mother's closest relative. When Chuen comes to the attention of Piu, a top triad boss, the Hung Lok gang is assigned a hit; Chuen commits the murder and then is frustrated when Apple's father takes the fall. Chuen's cockiness gets him in trouble again when he disobeys Piu to revenge a friend's death. Chuen, who's reached the police bulletin board's most wanted, is now expendable. Can he and Apple escape to the Mainland?

An armored truck carrying $170 million is held up by a sophisticated ring of bank robbers. The police are at wit's end.

An unhappily married couple invite the wife's beautiful cousin, who has survived a horrifying experience in Mainland China, to live with them. She has her own special way of overcoming hardship and becomes the master of the human barbecue.

The "walk in" of the title refers to one person allowing another's soul to take possession of his body at the time of death.

An SDU member (Alex Fong) is transferred to a local Hong Kong Police Station as a Chief Inspector. There, he will lead a team in order to fight the triad crime activity till the last consequences.

The Organized Crime Bureau investigates a ring of drug dealers from Taiwan. After losing the life of an undercover cop and $5,000,000 in borrowed drug money Chow and Lee pursue the drug dealer to Taiwan. Chow is caught and pretends to be a Hong Kong drug dealer. With Chow on the inside and Lee on the outside they are lead to the big finale.