Korean war movie set in Seoul in 1950. Jin-seok (Won Bin) and his older brother Jin-tae (Jang Dong-kun) run though the streets of their hometown, without a care in the world. They have clothes on their backs, food on the table, and a loving family. The brothers live with their mother, their much younger siblings, and Jin-tae's soon-to-be wife Young-shin (Lee Eun-joo). This tranquil existence is shattered when war breaks out. North Korea has invaded, and the family is forced to abandon their home. While making the way to safer grounds, soldiers arrive and take Jin-seok into custody. All men capable of carrying arms must report for duty. Jin-tae tries to free his brother, but he too is captured and both siblings suddenly find themselves on an army train, heading straight to the war's front line. With Southern forces failing to hold the Communist North's advance, Jin-tae organises a tight-knit group of conscripts and orchestrates a daring isolated attack. Earning the respect of the men and his superiors, with each increasingly suicidal mission, Jin-tae is promised to be awarded the Medal Of Honour that will enable him to demand Jin-seok be sent home.