The drama tells the story of the young technician, Chang Hanqing, and the fighting hero, Jin Xing, after the founding of the People's Republic of China . It is the story of the R&D, innovation, and development of the new Chinese electric locomotive.
Based on the two historical events of "Yichang Retreat" in 1938 and "Shipai War" in 1943, the drama tells the story of the war of resistance that occurred in Yichang from 1938 to 1943.