By a strange twist of fate, dutiful Hong Kong policeman Dan saves the life of the leader of a violent gang of armed robbers. When they commit another crime, Dan is determined to put an end to their activities. He works with the leader, whom the gang had betrayed, to engineer a plan to wreak havoc within the gang and let the gangsters kill one another. But it becomes increasingly obvious to Dan and to his colleagues that Dan is suffering from a severe mental disorder, and Dan finds that instead of upholding the law as a righteous police officer, he has now become a fugitive wanted for murder.
Dr Wong
Hong Kong, the present day. At the luxurious Yee Low Mental Sanatorium, psychiatrist Xiao Tingqin (Tang Yifei) is assigned the case of "special" patient Sum Liu-sheung (Cherrie Ying), who claims to live both in the real world and 12 parallel universes, and appears to have special powers. As soon as they meet, Sum starts playing mind-games with Xiao, whose one-year-old marriage to independently wealthy policeman Zhen Shanlin (Stephen Fung) is already under serious strain, due to her workaholia and her aversion to being touched by him. Sum introduces Xiao to the scientific concept of "worm-holes", through which one can travel in time and to parallel universes, and stirs memories in Xiao of her past relationship both with Zhen and her first love, Ji Lü. Zhen's friendship with gourmet-food shop-owner Gu Xilin has also put further strain on her marriage, and one day, meeting them in the street, she starts to wonder whether Sum has enabled her to experience parallel versions of her life.
Koo's wife
A cop teams up with a pimp to catch a killer, who castrates his male victims.
Teacher Yeung
Mr. Kong is not a typical Hong Kong teacher. He isn't happy just teaching his students in his class, but he would rather go to rave parties and play along with them, as well as follow his female students and sit with them in their revision classes. However, by the time Mr. Kong wins the hearts of his students, the school revealed that he is not qualified to be a teacher.
Sammy's sister
Various government departments of the Hong Kong Special Administrative Region have been criticised heavily by the public. The Commissioner welcomes the proposal of "Sunshine Cops" from public relations officer Geena to enhance the image of Hong Kong's finest. Both Lemon and Sammy have recently completed their Police Tactical Unit (PTU) training. They look like movie stars and are fit and ready to conquer the world. They are selected to represent PTU in the internal audition for "Sunshine Cops" and contest against elite from other units like Criminal Investigation Department and Task Force, etc. The competition is tough but they prevail.
A case of juvenile violence called "Horrible Tortures" shocks the city. The highest sentencing is life in prison. However, one of the most important criminal in the case, Beep, is only sentenced to seven-year imprisonment. The verdict has the other story behind.
Mandy
Lau is a spoiled playboy who’s on fiancée number 8 - and makes sport of getting rid of them. With his entourage (including an amusing Anthony Wong) in tow, he boards the cruise ship Fascination with the intent of ridding himself of his latest set-up. However, he didn’t count on falling for heiress Sandy who is - no surprise here - the only girl who can withstand his “money buys all” attitude. Things aren’t that simple - she’s losing her fortune and won’t let money buy her. Lau must prove that he can be a normal guy so he follows her ashore with a backpack and $10 in his pocket.
