It tells the story of the end of the Northern Song Dynasty, when the salt god of Mengzhou Prefecture caused chaos, and unsolved cases were repeatedly reported, causing panic among the people. Wu Song returned with great courage, and after drunkenly beating Jiang Menshen, he joined hands with Shi En and Yu Lan to solve the mystery of the salt god. After this battle, he finally saw through the human heart and the injustice of the world, and was forced to go to Liangshan...