I have watched many Korean thrillers like chasers, memories of murder, and of course oldboy. I thought I have nothing to expect more from them after watching these great movies. Oh boy! How wrong I was! This movie started with a mysterious murder and the investigation was carried by the detectives very efficiently. Within no times they found the murderer with all evidence. Then I wonder what else to show! And there was a lot to show. The show was just started. A journey through corruption, love, memories, sorrow and most likely VENGEANCE. New stories and twists start to unfold and in every single twist you will be delighted! But the purpose of the movie is not to delight you. It serves you shock, depression and leave you haunted for several of hours, even days! The acting is powerful, directing is good, story is awesome. One of the better things of the movie is the music. I don't know why this movie is so underrated, if it would made in holy wood it could easily placed in the top 250 list of IMDb. Do you a favor and go through the movie, but don't do this if you are not open minded and cannot take shocking things.