The supreme being of the immortal world - Yu Mo (also named Zi Xiao) of the Xunyang clan was feared by all the immortal sects because of his too powerful spiritual power. While he was replenishing his spiritual power, the demon master Ning Xi (also known as Wansheng) led the immortal sects to raise troops and razed Xunyang to the ground. Yu Mo was beaten to ashes by Ning Xi.
In the third year after Yu Mo's death, Ning Xi sacrificed his blood to his spirit to recall him. A slow journey of exploration began. Gradually, he understood Ning Xi's intentions and became a Taoist couple with her.
But this is the supreme union of demons and immortals, which defies heaven and earth and violates human ethics. During the long trial, he only said: "You defy heaven, and I will follow you."