44 user 56 critic

Infernal Affairs 2 (2003)

Mou gaan dou II (original title)
Not Rated | | Action, Crime, Drama | 1 October 2003 (Hong Kong)
In this prequel to Mou gaan dou (2002), Chan Wing Yan has just become an undercover cop in the triads while Lau Kin Ming joins the police force. Both the triads and the police find an enemy in a rival crime boss.


(as Andrew Lau),



Watch Now

From $2.99 (SD) on Amazon Video


IMDb at Comic-Con 2016

Visit our Comic-Con section to see what's trending, watch celebrity interviews, follow event coverage, browse cosplay photos, take our Fan IQ quizzes, and more.

Browse IMDb's Guide to Comic-Con

4 wins & 11 nominations. See more awards »
Learn more

People who liked this also liked... 

Action | Crime | Drama
    1 2 3 4 5 6 7 8 9 10 7/10 X  

Months after the events of the original film, Ming suspects a police superintendent as being a new mole for the triads, while years earlier, Yan embarks on his first mission.

Directors: Wai-Keung Lau, Alan Mak
Stars: Tony Chiu Wai Leung, Andy Lau, Leon Lai
Crime | Drama | Mystery
    1 2 3 4 5 6 7 8 9 10 8.1/10 X  

A story between a mole in the police department and an undercover cop. Their objectives are the same: to find out who is the mole, and who is the cop.

Directors: Wai-Keung Lau, Alan Mak
Stars: Andy Lau, Tony Chiu Wai Leung, Anthony Chau-Sang Wong
Initial D (2005)
Action | Comedy | Drama
    1 2 3 4 5 6 7 8 9 10 6.4/10 X  

After winning his first competition, Takumi focuses his attention on drift racing, a sport he has unknowingly perfected while delivering tofu in his father's Toyota AE86.

Directors: Wai-Keung Lau, Alan Mak, and 1 more credit »
Stars: Shawn Yue, Edison Chen, Jay Chou
Election (2005)
Crime | Drama | Thriller
    1 2 3 4 5 6 7 8 9 10 7.1/10 X  

Rival gang leaders are locked in a struggle to become the new chairman of Hong Kong's Triad society.

Director: Johnnie To
Stars: Louis Koo, Suet Lam, Tony Ka Fai Leung
Overheard (2009)
Crime | Thriller
    1 2 3 4 5 6 7 8 9 10 7.1/10 X  

A trio of police officers conduct surveillance on a listed company.

Directors: Felix Chong, Alan Mak
Stars: Daniel Wu, Grace Huang, Jingchu Zhang
Crime | Drama | Thriller
    1 2 3 4 5 6 7 8 9 10 7.4/10 X  

As election time nears, current Triad chairman Lok (Yam) faces competition from his godsons. At the same time, Jimmy (Koo) looks to increase his business relations with mainland China.

Director: Johnnie To
Stars: Louis Koo, Simon Yam, Nick Cheung
Comedy | Crime | Drama
    1 2 3 4 5 6 7 8 9 10 6.5/10 X  

A cop is forced into early retirement due to retinal damage. But after witnessing a bank robbery along with a female inspector - who believes he has acute senses - they team up in hope to solve the case.

Director: Johnnie To
Stars: Andy Lau, Sammi Cheng, Kerry Chan
Action | Crime | Drama
    1 2 3 4 5 6 7 8 9 10 7.4/10 X  

Police inspector and excellent hostage negotiator Ho Sheung-Sang finds himself in over his head when he is pulled into a 72 hour game by a cancer suffering criminal out for vengeance on Hong Kong's organized crime Syndicates.

Director: Johnnie To
Stars: Andy Lau, Ching Wan Lau, YoYo Mung
Action | Adventure | Comedy
    1 2 3 4 5 6 7 8 9 10 7.9/10 X  

Fantasy adventure about the arrival of Buddhism in China. When the Goddess of Happiness tosses the Longevity Monk and his disciples out of heaven (because the Monkey King tried to attain ... See full summary »

Director: Jeffrey Lau
Stars: Stephen Chow, Man-Tat Ng, Kar-Ying Law
Protégé (2007)
Crime | Drama | Thriller
    1 2 3 4 5 6 7 8 9 10 7.3/10 X  

A special agent has for 8 years been deep undercover in Asia's lucrative organized crime trade as he plays protégé to one of the key players, Banker. Nick now has but he has started to feel loyalty to his new environment, and to the money.

Director: Tung-Shing Yee
Stars: Andy Lau, Daniel Wu, Louis Koo
Action | Adventure | Comedy
    1 2 3 4 5 6 7 8 9 10 8.1/10 X  

The convoluted continuation of the adventures of the time-traveling, now-human Monkey King, who attempts to fulfill his divine destiny.

Director: Jeffrey Lau
Stars: Stephen Chow, Man-Tat Ng, Athena Chu
Action | Comedy | Crime
    1 2 3 4 5 6 7 8 9 10 7.2/10 X  

A SWAT team leader is going undercover at a high school to retrieve a stolen gun for his captain.

Director: Gordon Chan
Stars: Stephen Chow, Man-Tat Ng, Sharla Cheung


Cast overview, first billed only:
SP Wong Chi Shing (as Anthony Wong)
Francis Ng ...
SP Luk (as Hu Jun)
Tung Cho 'Joe' Cheung ...
Kwun (as Joe Cheung)
Henry Fong ...
Gandhi (as Fong Ping)
Peter Ngor ...
Arthur Wong ...
Teddy Chan ...
Chung-yue Chiu ...
Mary (as Yu Chiu)
Phorjeat Keanpetch ...
Say Ping Yap ...
Socialites (as Ye Shi Pin)


In the prequel of Infernal Affairs. Chan Wing Yan has been expelled from police academy in cause of his relatives to the triad. Now SP Wong give him a chance to undercover the triad family controlled by his half brother Hau. Besides of Ming. He has been ordered to killed Hau father and infiltrated the police department. The story get complicated when Wong's related to Hau father's dead. The avenge is begin when Mary. Sam's wife is the hit order. Now everything is complicated and related Written by PDD

Plot Summary | Plot Synopsis


It was the best of times. It was the worst of times. We all climb towards heaven. We all fall towards hell. See more »


Not Rated | See all certifications »


Official Sites:


| |


| | |

Release Date:

1 October 2003 (Hong Kong)  »

Also Known As:

Infernal Affairs II  »

Company Credits

Show detailed on  »

Technical Specs


| (TV)

Sound Mix:


Aspect Ratio:

2.35 : 1
See  »

Did You Know?


The line that SP Wong says, "Evil prevails. Only the good die young," is a simplified translation of what he actually says in Cantonese which is an old Chinese saying. See more »


When Mary Hon is at the airport, having got out of the taxi and ignored the phone call, she is standing in front of a large blue sign. The sign indicates the direction to "Departure" and "Immigation". The second word should read "Immigration", with an "r". See more »


Hon Sam: Play it by ear. Run if you have to.
See more »


Composed by Kwong Wing Chan
Performed by Tan Han Jin
OP: Click Music Ltd.
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Outstanding and Recommended
9 October 2003 | by (Hong Kong) – See all my reviews

After phenomenal success of "Wu Jian Dao (2002)" (or IA for short), a lot of hypes generated around when next two movies in the series are announced. I tend to ignore them and do not expect anything about IA2. Before I got into the cinema, "how would the screenwriters present this time,and how would they connect the characters between them?". After the movie, I would say I am not disappointed.

Like IA, this is also a drama about clashes of characters, not in the form of breath-taking kung fu / wire-work actions we find in traditional Hong Kong cop movie, but starting from their own desire, intentions, hate and positions. If you are looking for a non-stop action flick, I am afraid IA2 would not fulfill you.

But unlike last year's blockbuster, the main theme of IA2 is about the rise and fall of a great gangster family Ngai, other than about the police. The difficult part in making a prequel lies in the fact that as audiences all know too well the new appearences would drop-out one way or the other and the characters from IA must be okay. So the story does not waste efforts in describing most of the adventures, rather, concentrate on how these events shapes things to come. It is sure to the scriptwrites' credits and this alone casts a strong contrast to prequel movies like "Star Wars: Attack of the Clones" (2002).

Moreover, it is not surprising for many audiences relating this with similar movies like "The Godfather". I am not comparing them here, but rather I would point out that the actor Francis Ng, who plays the new gangster head of Nagi family, runs the show. He plays a young, well-educated, cool,calculating, witted, cruel, cunning -- and unpredictable leader. As some critics say, a CEO-style triad boss. On the other hand, he successfully shows Ngai is actually a passionate man whose family comes first. On the other hand, late gang leader is screened for one shot only (pun intended), his character is only reflected, not by flashbacks, but by short monologues recited by Ng. It is a quite demanding job and I would say Ng has done a really good job here.

Speaking of characters, another drift from IA, and many other traditional movies in the genre, female character actually plays "real" effects. Mary, played by Claudia Lau, is the closest girlfriend of Sam Hung. She is not just a powerless, declorative character. Like many female in the course of human history, she is the ignition point of the whole storm.

If the audiences has not forgotten IA actually hints that Inspector Wong (played by award-winning Anthony Wong) and Sam Hung (played by also award-winning Eric Tsang) have known each other for a long time. IA2 unveils their long-time mutual respects, and how all these change as the story flows along. Anthony Wong still delivers a high standard of acting just like in IA and how he plays the 3 ups-and-downs of Inspector Wong is simply terrific. On the contary, gangster Hung, Wong's arch-enemy in IA, is much lighter and more human. As with Wong, this character experiences changes which shapes of what to be seen in IA. However, I find the last party scene is unnecessary and does not seem to connect with the firece and uncanny Hung we used to know.

Relatively, the other major characters seems week. Mainland actor Jun Wu, plays another inspector who is a close partner with Wong. I could see the actor tries. Unfortunately, Wu's character is just too flat. His friendship and his clashes with Wong could not mark strong impressions among the audiences. I have a (probably false) feeling that this character is created to be destroyed and it is a waste of Wu's talents.

The actors portriating the young Wing-yan Chan (by Shawn Yu) and Kin-ming Lau (by Edison Chan) would be the weakest link in IA2. Except for a few scene, Edison puts up a regular expression of somewhat between arragonce and anger. For example, towards the end of airport scene, Lau would have a mixed feeling of guilt, anger, loss and vengence. This is an important scene for Lau's self-centered character, however, the actor simply fails to convince me.

The same goes to Shawn. He fails to play as someone who is torn between his role as a "policeman" and a triad member, his loyalty and duty. Most of the time, he just plays plain and "flat faced". To be fair, he gets a tad better towards the end of the movie as his character begins to merge with the character in IA.

Nonetheless, young actors weight must less as the others.

Speaking about continuity, IA2 does not fail in providing bits and pieces about the backstory of IA. And it is not hard for anyone to catch the images of other minor characters from IA. However, I have a few issues.

First, in IA, we see Hung was an ambitious and man of vision, that is why he implants many moles in the police department in the first place. However, the initial character of Hung seems too soft and passive. Why does he stand by Ngai in the time of crisis? We could not see his importance rises afterwards. Why didn't he use the chance and take out his opponents or expand his influence in the triad, then? Was he just covering himself for his long-term plan?

Also, why Wing-yan Chan remains in the end, even in light of his well-known ties with the Ngai family? How come does he becomes a subordinate of Keung? In IA, the position of Keung and Yan seems to have switched.

Apart from some goofs (accuracy of shooting from a paper bag, ignorance of emptied handgun and way of corspes could be burnt to ashes), the run of the movie stops rather abruptedly twice as timeline transits from year 1991 to 1995 and from 1995 to 1997. The effects on and changes of characters are not appearent so it leaves the audiences with a lot of imaginations and mental exercises. (Not that I hate mental exercises, it is rare for Hong Kong movies to make me enjoy doing so) I think the director could handle the storytelling a bit better smoother and tighter.

Despite of cliches, IA2 delivers a more powerful drama than the original. The acting, directing and many other technical aspects are top notch. The scriptwriters are very clever in telling from the other side of the theme and breaks away the shadow casted by the successful predecessor.

Looking forward to see the real "final" this December.


6 of 7 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
Much better than IA1 aaronlz119
Great movie but isn't it like Godfather??? toyguy
I love how every moron buyaababy
Question on Sam and Yan drunkmastersony
Who was the guy on the motorcyle and Lau's future wife drunkmastersony
FYI: Music in the film was Hungarian syntern-1
Discuss Infernal Affairs 2 (2003) on the IMDb message boards »

Contribute to This Page