In ancient times, the Emperor God exhausted his cultivation to suppress the Demon King. Before entering seclusion, he reincarnated a trace of his essence as Han Mu. Unaware of this, Han Mu encountered Xuan Li, a demoness with innate demonic power, while cultivating in the Jiuchong Mountains. As they trained together, a deep affection grew between them, and they came to know and accept each other.
During their journey to the west to retrieve Buddhist sutras, Sun Wukong is always questioned by his master Tang Sanzang about killing people indiscriminately, which results in a gap between them. One day, they stray into a village and run into a cute fox Xiaoqi, and Xiaoqi's elder brother is onto Tang Sanzang and his three disciples in order to extend Xiaoqi's life...