Follows an investigator as he prevents a terrorist attack during a symposium held by Hong Kong's Independent Commission Against Corruption. He later finds it has links to human trafficking in Thailand.

One month earlier, Shang Zhen (Lynn Hung) arrives in Seoul, South Korea, where she coincidentally meets Jian Yu (William Li), who had his marriage proposal rejected. Shang Zhen, who is still heartbroken, had a sudden idea: to use Jian Yu to sabotage her ex-boyfriend's wedding. Thus, Jian Yu follows Shang Zhen back to China, where she reveals her "wild" side. Shang Zhen's cousin, Yong Zhen (Feng Yuanzhen), is also much of a headache for men. Working as a Taekwondo coach, Yong Zhen has a student named Zhi Kai (He Jiong) who lacks masculinity. Zhi Kai admires Yong Zhen greatly but often suffers under her fists and feet. Jian Yu accompanies Shang Zhen in preparing for the wedding sabotage, but during a rehearsal, they offended a stranger. Meanwhile, the wedding date is fast approaching. The film is an unofficial sequel of the 2001 South Korean film "My Sassy Girl".

Kung and Kin's rivalry goes way back to the seventies when they fought over the same girl, who eventually became Kung's wife. Now they run competing phone stores right across from each other on Mongkok's busiest street, and stretch their minds trying to outdo each other with crazy promotions.

Laughing is judged guilty of murdering gang lord Michael So and is sentenced to life imprisonment. Locked up behind bars, he meets the seemingly benign inmate Fok Tin Yam, a university professor in criminal psychology who is jailed for drug possession. Highly intelligent and manipulative, Fok reveals the power of his mind games by effortlessly subduing the violent prison bully. He also deduces that Laughing is sent to the prison on an undercover mission to find out the rogue cops within the police force. The clues lead him to inmate Chit, a former sergeant from the Narcotics Bureau who has been suffering from a mental disorder. To unlock the critical information from the deranged man, Laughing must get the help of Fok, but this enigmatic figure has an agenda of his own...

After his business goes bust, Ng Shun and his family move back to his old apartment to stay with his father. He has not returned for 10 years because the apartment is too small for his family. Furthermore, the environment is unfamiliar to Shun's family. Coincidentally Shun's old childhood friend, Lung returns too. Due to an old misunderstanding, Shun is distrustful of Lung. Will Lung regain Shun's trust again?

Kwok Ching is a soon-to-retire television weatherman who really has long aspired to be a news anchor. At home, he's single-handedly brought up three children, but they are fed up with him meddling in their lives. His eldest daughter Mei Mei is a successful lawyer, and married to househusband Yao Ming. Tomboyish second daughter Ching Ching manages a supermarket and is in love with sissy promoter Lok Yi Nga. The youngest son Fu Shing is an otaku enamored with beautiful starlet Vivian and he unwittingly becomes the romantic rival of billionaire Roberto. Meanwhile, struck by the shocking news of the world's impending doom, Kwok Ching is determined that he must reunite his family before it's too late...

Kin Shing is the leader of a drug syndicate, code-named "Black Wolf", while his older brother Kin Chung is a member of the Narcotics Division of the Hong Kong Police Force. At the same time, he is involved in a fight against drug lords and it is this investigation that the elder brother discovers that his younger brother had another identity. The two starte a confrontation between good and evil for their respective goals.

Eric Tsang and stars are back with another entry into the "I Love Hong Kong" franchise: this Chinese New Year with a story that is set in the 1970s, a decade of economic growth and prosperity for Hong Kong and the citizens.

Comprised by two love stories: The first story features Donnie Yen as a traffic cop, “Mr. Cool” who never smiles due to a rare disease. He meets and falls in love with Michelle Chen, a patient with amnesia, and spends most of her time looking for her missing fiancé. The second story features Zhendong Ke as a Criminal Intelligence Bureau cop who falls in love with Angela Baby after a 7-day "game of romantic" with her. But when his bureau starts monitoring her, he begins to have doubt on her. Is she a criminal?