It is said that five hundred years ago, the high monk Zangsheng led many monks to pursue the demon Qiuyueqing. In order to subdue the demon, he did not hesitate to scoop out his heart and offer it to the demon, in exchange for a promise that the demon would not come out to harm people for five hundred years. Five hundred years later, the demon reappears in the world. It plans to abduct the daughter of the Demon Lord to increase its own magic power. The daughter of the Demon Lord, Caiyi Zhou Huimin, is cultivating in the Weibo Sect, but she does not know her true identity. Bai Min'er, played by Zhang Min, the master of the Weibo Sect who knows the inside story, decides to stop the demon's conspiracy. She joins forces with the leader of the Quanzhen Sect, Qiuchunan, played by Feng Cuifan, who cultivates on the same mountain, as well as the reincarnation of Master Zangsheng, the scholar Liao Zhen, played by Ni Zhen, to engage in a fierce battle with the demon.