At the end of the Tang Dynasty, Huangfu Dian, the elder of Kunwu Pavilion in Kunlun Mountain, felt that the demons were destroying the dragon veins, so he led his disciples to fight against the thousand-year-old tree demon. Unexpectedly, the tree demon absorbed the demon's Wanpo Xuanyin Pearl and its strength increased greatly, and all the people in Kunwu Pavilion were damaged. In order to preserve his strength and reverse the crisis, Huangfu Dian exhausted his magic power to activate the Feiliu magic circle, and sent his eldest disciple Xuntu and female disciple Chu Ling'er back to Panshi Town three days ago, hoping to destroy the tree demon before it got the Xuanyin Pearl. The little man Li Yuanji and his companions met Chu Ling'er and Xuntu, and were involved in a contest with the tree demon and other demons. In the process of fighting against the demons, they gradually grew up, changed the mentality of the petty citizens who were indifferent to the matter, and took on the mission of upholding justice. In the end, they made self-sacrifice to save the people, defeated the demons, and became heroes of the desert.