In the early years of the Republic of China, the Institute of Biology of the Northwest Science Society received a mysterious letter, learning that there were mutant creatures infesting the sandy sea, so they sent an exploration team to the biology laboratory, but they were almost wiped out. Liu Mengxi (played by Xiao Bo) and Xia Xuan (played by Yu Xinyan) escaped as survivors with the samples, but they met the agency in Sand Dune Town. The samples were damaged and exhausted. Decoration) rescued. The two of them found that almost only old, weak, sick and disabled were left in Sand Dune Town, and outside the town, the monster seemed to have heard something and was quietly approaching Sand Dune Town...
Sun Xiaotian who recovered the mana, began a spiritual journey with Dongfang Mo,Yang Jiuli, and Ting Ting. They traveled all the way west, passing through the Ewha City in the Black Bone Mountain of Xiaomanguo. Under the guidance of strange crying, they rescued Su Luoying, the daughter of the "black wind old demon" in the legend of Ewha City. Sun Xiaotian met Su Luoying's princess Huo Fenghuang in the process of helping Su Luoying to resolve his internal resentment. Sun Xiaotian and his team found the sleeping black wind old demon together with Huo Fenghuang. Unexpectedly, things are here, far from over, the real behind-the-scenes master of Ewha City has someone else.
소주성에 요괴들이 활개를 쳐 피해가 늘어나자 법사들은 천하의 요괴를 모조리 없애겠다는 사명감으로 요괴를 해치우며 백성들을 지킨다. 그러던 어느 날, 뱀 요괴 청년 죽엽청이 요왕의 자리를 노린다. 이 과정에서 법사 번해는 요괴와 결탁한 천익각 각주의 덫에 걸려 법력을 잃게 되자, 다시 법사의 신분을 되찾기 위해 요괴인 죽엽청과 협력한다. 요괴를 전부 죽여야만 하는 법사의 운명과 살아남으려는 요괴의 운명은 어떤 결과를 가져오게 될 것인가...
