--The waters of the great river-

Zheng Hao (played by Nie Yuan), director of the Risk Control Bureau of Lingshui District Taxation Bureau of Xindong City, used big data technology to solve major cases repeatedly and was transferred to the Inspection Bureau as the head of the Second Inspection Section; his ex-girlfriend Liang Jinqiu (played by Yang Rong), also returned to China to develop his career at this time after working in a foreign country for many years; and Zhao Mingda (played by Zhang Duo), a professor at the University of Finance and Economics, who was called the % high IQ iron triangle during his college years, was in trouble because of his daughter's condition.Xindong, which seems peaceful and peaceful, has a huge criminal network that makes profits by evading taxes in the dark. The fate of several people is turned into the unknown by the sudden situation...