The film is based on Huang Jiguang, a special hero awarded by China and North Korea for his contribution to the War to Resist U.S. Aggression and Aid Korea. It shows how Huang Jiguang joined the army and was trained in the army, constantly improving his willpower and battlefield skills, and finally became an excellent soldier. In the Battle of Shangganling, in order to complete the task assigned by his superiors and for the victory of the entire army, facing the enemy's machine gun in the bunker, Huang Jiguang sacrificed himself and bravely blocked the gun hole, buying a short time for his comrades and thus eliminating the enemy.