In ancient times, Emperor Yan and Emperor Huang joined forces to defeat Chiyou in Zhuolu. Although Chi You died, his consciousness was immortal. With the help of the Indian god Rahu, he rested in the souls of his descendants through blood as a medium. In order to prevent Chi You from awakening, the Yellow Emperor ordered Xuanyuan envoys to guard Chi You's descendants from generation to generation to prevent the demons from invading the land of China again.
In the long river of time, the land of China has undergone vicissitudes and dynasties have changed. Three thousand years later, it was the Song Dynasty. By chance, Huangfu Qing, a native of Kaifeng, met Ye Li, a fisherman girl from Changsha, and Hua Yuhuang, a blacksmith girl. The three of them accidentally subdued a thousand-year-old female corpse demon and resolved their simmering grudges for thousands of years. Then, under the guidance of the God Jialan, they uncovered the secret of the local legendary Yunzhongxian, clarified the inextricable relationship between the Xuanyuan envoy and Chiyou's descendants, and ended a three-thousand-year-old bond.