Chen Huai, a modern water conservancy doctor, traveled through time and became a river worker in the Northern Song Dynasty. Facing the Yellow River that burst every year, he implemented innovations such as measuring diversions and cement bank protection, but he touched the cakes of the county magistrate Wang Mingyuan and the powerful Liu Zhen. Under the secret dealings of the bookkeeper Zhao Shouzheng, Chen Huai conquered the old river worker Gao Dehou, trained the surveying and mapping scholar Shen Mo, and gradually solved the corruption scandal. But an autumn flood that has never happened in a century is about to come, and the larger forces in the court are also opening their mouths to control the river. It is a life and death battle with heaven and man.
