There is a rare book called "Heavenly Book" in the Heaven Palace, which has been locked in a stone niche for three thousand years. Yuan Gong, who guards the Heavenly Book, is very curious about the contents of the Heavenly Book. He secretly takes it out to read when no one is around. It turns out that the Heavenly Book records 108 spells. Yuan Gong secretly descends to the earth and carves the contents of the Heavenly Book on the stone wall. However, Yuan Gong, who intended to benefit mankind, violated the Heavenly Law and was punished by the Jade Emperor. The elixir in the alchemy furnace was accidentally eaten by three foxes. They turned into spirits and descended to the earth to cheat people of their money. They also pretended to be fairies and colluded with the government to oppress the people and bring disaster to the world. Yuan Gong then guided the gifted Dan Sheng - a child who jumped out of an egg, to practice the spells in the Heavenly Book, fight wits and courage with the fox spirits, and eliminate harm for the people.