For four years in the desert, the demons were in chaos. It is said that if there are 9999 kinds of demon slayers, then there are 9999 demons. Gong Xiran——is one of the 9999 kinds of demon exterminators; Mo Qianli is one of the 9999 kinds of demons. He embarked on a road of no return for her; she also chose a road of no return for him. The difference is that he will come back, and she will never be able to spend time with him again...