|Directed by||Law Wing-cheung|
|Produced by||Johnnie To|
|Distributed by||Media Asia Distributions|
The story starts with real estate tycoon Wong Ho-chiu (Anthony Wong), who is celebrating his wife (Maggie Cheung Ho-yee) and adult daughter Daisy's (Janice Man) birthday. Daisy wants to travel overseas, but Wong Ho-chiu gets into an argument with her and she runs out of the house. The next day, Wong Ho-chiu receives a cellphone video message of Daisy, who has been kidnapped, with her captors demanding ten million for her release. Wong Ho-chiu does not report this to the police, as he thinks it is his own daughter who has abducted herself and is requesting money for it. He warns the kidnappers that if anything happens to Daisy, he will stop at nothing to avenge her. Because of this threat, the kidnappers become agitated and decide to kill Daisy by leaving her bound, gagged and blindfolded, with a plastic bag over her head to suffocated her.
Meanwhile, Wong Ho-chiu asks his most trusted bodyguard, Chor (Richen Jen), to look for her. While searching, Chor manages to find the location of Daisy's body. When the news reaches Wong Ho-chiu, he is distraught to learns that his daughter is dead. He nonetheless lies to everyone by saying that Daisy is alive and was instead sent to L.A. Wong Ho-chiu turns to Chor to seek out the perpetrators and exact revenge. Wong Ho-chiu goes one step further and orders Chor to videotape each of their executions. Each time a videotape of the execution it sent to Wong Ho-chiu, he engages in a prayer. When the third perpetrator is tracked down, Wong Ho-chiu's wife gets to know about the matter and asks Wong Ho-chiu to stop the revenge killings. He refuses, leading to his wife leaving him.
During Wong Ho-chiu's medical check-up, his doctor told him that his assistant came to pick up Daisy's heart ailment medicine. Only then does Wong Ho-chiu realize who the final perpetrator is and requests Chor to bring him over, as he wants to kill that person himself. The final perpetrator turns out to be Daisy's female assistant. While fighting, she falls off the rooftop and it is revealed she has a daughter. When Wong Ho-chiu sees the daughter, he recalls Daisy's childhood and he has second thoughts of killing the assistant. They pull her up to safety and leave the scene. Chor and Wong Ho-chiu part ways afterwards.
Having taken revenge on his daughter's murderers, Wong Ho-chiu takes Daisy's ashes Salar de Uyuni in Bolivia, a place she wanted to visit. He spreads her ashes before breaking down and crying.
- Anthony Wong as Wong Ho-chiu
- Richie Jen as Chor
- Janice Man as Daisy
- Maggie Cheung as Mrs. Wong
- Candy Lo as May
- Lam Lei as Pang
- Jun Kung as Pang's accomplice
- Charlie Cho as T.K. Chiu
- Elena Kong as Wong Ho-chiu's deceased wife
- "Johnnie To collaborator delivers HK thriller". Retrieved 2011-03-14.