Based on real events during the Korean War. On June 25, 1950, North Korean forces crossed the 38th Parallel to invade South Korea, capturing Seoul (now known as Seoul) within three days, and the front line continued to push south. With the support of the U.S. military and United Nations forces, the South Korean army mounted a counterattack. U.S. Commander MacArthur proposed the Incheon Landing Plan, code-named 'Operation Chromite,' which urgently needed a large battalion of troops to flank the enemy, mislead them, and cut off the supply lines of the North Korean army through the landing at Changsa. Due to the extremely challenging nature of the mission, as well as the weak troop strength of the South Korean army at that time, which was unable to spare enough regular forces for support, the military had to assign this task to 772 student soldiers. These student soldiers had an average age of only 17 and had received just two weeks of military training, entering the battlefield without any combat experience. The march was fraught with danger, and internal conflicts among comrades were numerous; fueled by youth, they engaged in various struggles. On the eve of the Incheon Landing, the Changsa landing mission was executed as scheduled. This group of passionate yet weak fighters inevitably faced the most brutal test of fate: crossing through shellfire and waves, drenched in blood at the beach, while the remaining troops found themselves surrounded by the enemy until they ran out of ammunition and supplies, struggling between death and survival...