A series of consecutive murders occurred frequently in Yunyin Town, causing panic among the people. In response, they decided to hold a grand River God sacrifice ceremony to seek peace. Physician Tao Ran was tasked with assisting in the investigation of the serial murders. During the process of tirelessly probing into the case with his apprentice, he accidentally saved the little fox Hua Zhi, who witnessed the crime, and befriended the avid drinker and wandering sorcerer Xiao Shu. Working together to solve the case, their attention was drawn to an embroidery workshop. As they collaborated, the truth gradually surfaced, revealing intricate connections between the strange occurrences and the River God sacrifice ceremony.