On the socialist road, the development of China's highways is closely linked to the fate of the people. "Dalu Chaotian" takes the construction of Sichuan highway as the incision, and takes the construction of Chengya Expressway, Yaxi Expressway and Yakang Expressway as the theme. It tells the development of the times by telling the fate and emotional stories of the three generations of road and bridge workers accompanying the reform and opening up.