In 1948, in Northeast China, the remnants of the Kuomintang evacuated and planned to blow up the Angang factory area. At the moment of crisis, the "combat hero" Zhao Tiechi (Liu Ye) led the Communist troops straight into the hinterland, fighting to the death and destroying the enemy's plot. Zhao Tiechi transformed into a "steel soldier" and joined the engineer Sun Xuefei (Han Xue), veteran worker Meng Tai (Lin Yongjian), and general manager Cheng Shixun (Zhang Guoqiang) to resume work and production. However, the blast furnace has become an iron pile, and the factory area is like ruins. Experts unanimously see the decline, spies observe it secretly, the situation on the front line is tight, and time is approaching day by day... The first furnace of molten iron seems to have become an impossible task...