In the world of the Primates, the most supreme beings are known as the Great Saints! Ten thousand years ago, during the Great Calamity, the ancient order of the cultivation world collapsed. Human kingdoms worshiped demons as false gods. Cultivation sects used demons to cause chaos, all for the sake of offerings. The Black Mountain Old Demon treads on the Yin wind, the Nine-Tailed Fox dares to suppress the dragon. The North Ming Demon King chants Buddhist scriptures, and the Demon Saint overturns the sea and changes Yin and Yang. Li Xuanzong, wielding a Xuanfa Ring capable of upgrading cultivation techniques, travels through time twice, transforming from a generation's evil king to a low-level cultivator clinging to demons for survival. In this chaotic world, Li Xuanzong seeks transcendence and the peak of power, becoming the Supreme Primate of the Heavens who stirs up the world!