Ancient Yi shot and killed the ferocious beast and chiseled its teeth, and its remaining soul was nailed to the crevice of the underworld by the Queen Mother of the West with nine soul-suppressing nails, and was guarded by the mythical beast Lu Wu. As time goes by, the soul-suppressing nail loosens. Three hundred years ago, a Kunlun shepherd boy was empowered by Chisel Tooth's saliva and transformed into a Taoist priest named Golden Crow. He devoted himself to helping Chisel Tooth collect ninety-nine pure yin spirits and pulled out all the soul-suppressing nails to help him break through the seal and be reborn. The story takes place in Qinghe County in the third year of Zhenghe in the Northern Song Dynasty. The protagonist Zhong Jialiang is the 72nd direct descendant of Zhong Kui. He possesses the yin and yang eyes and the seven-star demon-slaying sword, and opens a ghost hunting shop in the county. Hu Waner, a five-hundred-year-old nine-tailed fox, and Master Wu Nian fight against the crisis together.