It tells the legendary story of Lin Yu, a modern college student majoring in law, who accidentally transformed into Fan Chunren, the second son of Fan Zhongyan, a political official during the Renzong period of the Northern Song Dynasty. Lin Yu relied on modern knowledge and wisdom to devote himself to the reform wave of the Northern Song Dynasty.
At first, he led the reform of the official evaluation system, faced fierce opposition from conservative officials, and skillfully resolved disputes in the court. Then, focusing on the stubborn problem of land annexation, land reform was successfully implemented in many places despite heavy resistance from powerful families. During the reform process, Lin Yu met Su Yao, the daughter of a wealthy businessman. The two worked together to solve an economic fraud case, and their relationship quietly sprouted. Since then, Su Yao followed Lin Yu all the way and helped him break through the reform dilemma on the northwest border.
Now, Lin Yu has set his sights on tax reform, but once again encountered opposition from conservatives and powerful families. Under the pressure of reform, his relationship with Su Yao also experienced minor twists and turns. But Lin Yu always had firm faith and was determined to use facts and data to convince the emperor and the civil and military officials of the Manchu Dynasty, and to work hard on this challenging reform road for the prosperity of the Northern Song Dynasty, and for the future of himself and Su Yao.