Zhen Xiru is the leading figure in the dark force Mantidu in the 21st century. Her smuggling business is spread all over China. Carrying her obsession, she accidentally travels to the Qiankun Continent. By chance, she becomes a snake demon. She meets Lou Yu, a general of a country with a mind for the world, Qingyan, the romantic and swaggering master of the Luoshan Palace, and Jueshi, the elegant Onmyoji. The four people who had nothing in common became entangled with each other due to the deliberate arrangement of fate. Facing the fetters of this world and the fate that cannot be escaped in ancient times, how should Zhen Xiru, who is wandering among all living beings, make a choice? How many years will it take for the obsession that I once couldn't let go to be forgotten one by one? Fate always reminds the pain of the past time and time again, and reveals the scars buried in the heart that are getting rotten. Qianfan is too close, and suddenly looking back, it turns out that life is never allowed to retreat. . .