I went into this for the stellar cast. Hwang Jung Min picked up a Daesang for his role and that propelled me to watch this. Especially after seeing Choi Min Sik and Lee Jung jae on the cast list but I'm liking Hwang Jung Min more and more. Slight Edit to accommodate an actual review: As per the summary, this tells the story of an undercover cop infiltrating a gang. He spends years in the gang and rises up the ranks but he wants out. Unfortunately, as a valuable tool in the police force they won't liberate him not only due to the hard work and commitment it takes to be an undercover cop but they believe they can take down the gang. Unfortunately, I did not find this movie as compelling as it could have been. What was supposed to be a plot twist was predictable and actually made me dock marks because it made the plot a little iffy.It now propels you to point out a lot of things that don't make sense anymore due to the plot twist. In fact, prior to it happening, I sincerely hoped they would not make it that way because it now opens up a can off questions that make the premise not make sense. Plus, I'm not sure if I could call it a plot twist because it didn't really surprise me but others have called it so, so I'm doing so too. The story is very solid and has a film noir, toned down aspect about it that will either bore or thrill some of you. This tone is rarely seen these days due to the schizophrenic and fast paced world we live in. It has a very Mario Puzo aspect about it and that is a plus for anyone who's a fan. As in, you will see quite some Godfather channeling here almost as much as the blackberry product placement. I happened to be a fan so I appreciated this film to a certain extent sans the mediocre plot twist. The cast is stellar and they are all well known for their acting but overall I docked marks for the terrible ending. I'd also like to point out the not so subtle product placement. Blackberry anyone? Okay, it didn't bother me much but made me want to play the drinking game for every time I saw it. There's a liver damaging suggestion to those of you who haven't watched it.