At the end of the Tang Dynasty, the elder of Kunwu Pavilion in Kunlun Mountain, Huangfu Beng, felt that the demons were destroying the dragon veins and led his disciples to fight with a thousand-year-old tree demon. He did not want the tree demon to absorb the demon pearl and increase its strength. In order to save the strength and turn the situation around, Huangfu Beng uses up all his magic power to start the Flying Stream Formation and sends his eldest disciple Xuntan and his female disciple Chu Ling'er back to Panshizhen three days ago, hoping to destroy the tree demon before it gets the Xuan Yin Pearl.

Demon Sovereign Xuantian made a sound to protect the Demon Realm, and sent the little demon scum pretending to be alive to volley and ask the bone spirits to come out and help fight the demon door. The Bone Essence lives alone outside the world. According to legend, he is indifferent and bloodthirsty. When he tremblingly pushed open the door of the Skeleton Hall, he found that Mrs. Bones was an old person he had known before—his predecessor, Little Bones. But the Bone Lady had long forgotten who she was, and he handed over Xuantian's autograph letter to invite Bone Spirit to play. The Bone Essence refused to agree, due to the thought in her heart that she couldn't remember. If the scum volleyed to help her find her thoughts, she went out of the mountain. At this point, the sealed predecessor began to unfold like a scroll...