Han Yuan's abandoned son Xuan Heng was lonely and helpless all his life until he met Zhan Che, the prince of heaven. In order to protect him, Zhanche tried to hide him in the Nine Heavens under the pretext of going on an expedition, but unexpectedly found himself in danger, and the two of them were trapped in the demon world together.
In the dungeon, they are bound by chains, accompanying each other day and night, and dependence and protection quietly take root. Immortals and demons have different paths, and their fate is inevitable. A chaotic bond that no one knows tightly entwines their fate. Even if the road ahead is dark, he is still his only light.
Purpose: Even if you are a fairy or a devil, I will protect you.