This movie is a concoction of many romance, thriller and action movies. As the movie started, I thought to myself, ah, another shoot-shoot, bang-bang movie and that the heroes would be victorious in the end. Surprisingly, as the movie progresses, it actually turns out to be quite a movie with substance. The two South Korean agents that were assigned to track the assassin that killed many of their scientists started to suspect one another for being a mole as the assassin seemed to be ahead of them every & each time. Doesn't that remind you of Al Pacino and Colin Farrell in "The Recruit"? The question is who can we trust? Then, there was this over-the-top North Korean agent that lined his wits and brawns against the South Korean agent and naturally, there would be a grand finale show down. Doesn't that remind you of John Trovolta & Nicholas Cage in "Face Off"? Then, there was the element of romance to captivate female audience's interest. The South Korean agent's girl friend seemed to have a troubled past with alcohol and what was the demon that haunted her all this time? What was the corelation between her and the North Korean agent? Last but not least, it was the time to save the Presidents of both North & South Korea in the nick of time from their untimely death in an exhibition soccer match. Doesn't that remind you of Clint Eastwood trying to prevent John Malkovich from killing the President in "In The Line of Duty"? As been said by other viewers, the ending was very moving and you would definitely need tissues if you are a softie, which I am one! Overall, a very well-made movie and a movie that manages to captivate audience's interest from the beginning till the end. South Korea has definitely matured in its film-making by being daring to address the delicate or fragile peace between North & South Korea. You won't be disappointed with this offering.