Since ancient times, tales of demons have circulated throughout the world. In these legends, demons are evil, beautiful, and capable of bringing ruin to kingdoms. Every demon possesses immense demonic power, which they use to wreak havoc and sow chaos among humanity. But as human cultivators rose to power, the demon clans were hunted down. Countless great and lesser demons were pursued and killed by cultivators. In the end, only the intervention of Lady Nuwa brought the slaughter to a halt and protected the demon clans. At the same time, Lady Nuwa laid down a rule: no demon may wreak havoc in the human world. Demons can take the form of any living thing, be it flowers, grass, trees, birds, or beasts. Even a stone or a river can become a demon. After tens of thousands of years of recovery, the demon clans have finally regained some of their strength, and more and more demons have begun returning to the human world. As Zhu Xi prepares to undergo her tribulation and ascend to immortality, she travels through the human world with Little Stone. By chance, they meet Luo Xue, a young demon hunter. The two embark on adventures and face battles together for the ones they love, gradually falling for each other and ultimately spending their lives side by side.