This is a contemporary urban drama directed by Xin, starring Liu Bingyue, Liu Bingyue and Liu. The drama takes Fang Yunhe, a third-line builder, as the main line, which shows the struggle history and heroic life of the third-line builder and reproduces the story of the third-line construction.
Fang Yunhe's fiancee, Lin Yuping, deeply understands the righteousness. I would rather postpone the upcoming wedding than support the third-line construction with my fiance Fang Yunhe. Unexpectedly, the mother didn't want her daughter to be far away from herself, so Fang Yunhe had to say goodbye to her. Unable to restrain her yearning for the cloud and the construction of the "third line", she went to Guizhou alone and was finally reunited with Fang Yun with the help of local good people.
The drama brings the audience in China back to the era when the passion for the construction of the "Third Line" was burning, and tells in simple terms the deep feelings of the "Third Line" people who took root in Liupanshui with their mission.