Chang Hanqing is an electric locomotive engineer who came back from studying abroad. He has the dream and determination to build a train faster than a propeller plane. His style and idealization made him offend many people. Fortunately, his excellent help and sacrifice won his heart. After meeting Kim, they changed from mutual dislike to mutual understanding and love, overcame the interference from family and the outside world, and finally came together.
1960, Chang Hanqing, a young technician, just returned from studying abroad and met Jin, a female combat hero who changed jobs from railway soldiers to factories. They went from disagreement to mutual understanding and love, overcame the interference from family and outside, and finally came together.