Qu Li, the right guard of Nantianmen, was defeated when the demon master attacked Heaven, causing Heaven to be almost occupied by demons. The Emperor of Heaven punished Qu Li by sending him to the mortal world for eight hundred years to reflect on his mistakes, and took away all of Qu Li's magic power. The desperate immortal took the fairy artifact Hidden Sky Mirror and began a long life of traveling in the human world. Together with his little apprentice and little niece, he saw the warmth and warmth of the world and the impermanence of the world.