In 1953, the Korean War is entering the final stage. The People's Volunteer Army of China has launched the last major battle in Kumsong. In order to arrive at the battleground on time and deliver enough force to the Kumsong front line, the soldiers have to defend themselves against the never ending bombing of enemy bombers and race with time to repair bridges, all under the circumstance of supply shortages and inferior equipment. The rarely told history slowly unfolds.

八一电影制片厂出品的纪录片，长津湖之战为抗美援朝第二次战役的东部战线，是朝鲜战争中最惨烈的一次战役。当时，志愿军九兵团以16万优势兵力在朝鲜东北部的长津湖地区成功分割包围了美军陆战1师和步兵第7师一部共约3万人。但由于严寒、补给不足、火力差距和美军空中优势等原因，志愿军未能达成全歼陆战1师战役目的，并付出了伤亡6万余人的惨重代价。陆战1师的惊险生还也使美国军政高层信心大增，最终确立了继续将朝鲜战争持续下去的决心。

Korean War, winter 1950. In the frozen and snowy area of Changjin Lake, a bloody battle is about to begin between the elite troops of the United States and China.