If I were asked to describe this movie concisely, it is as if Paul Greengrass made a movie about the 9/11 attacks in New York. Paul Greengrass is the man who made the movies Captain Philips and United 93, both action thrillers which were gripping and moving. I was kept on the edge of my seat because I just didn't know what would happen next. The terror was real. At some moments, I even gasped out loud. At one point, the story almost moved into territory that conspiracy theorists would have loved, but thankfully the movie steered away from that very quickly. I was quite satisfied with the ending and the way Ha Jung Woo's character arc was resolved. There are some moments where the movie seems to be trying to tug at your heartstrings, but thankfully they are minimal, so that the movie didn't descend into melodramatic territory. Ha Jung Woo plays the central character. His character was an ordinary man thrust into the most extraordinary circumstances, and he grabbed the opportunity to be a witness to an important event. His performance is the most important to the movie. He is a quintessential action star and he doesn't disappoint. If you enjoyed Captain Philips, United 93 and The Bourne Identity, you will probably enjoy this.