Shen Yi'an was told since he was a child that he would become an immortal. Unexpectedly, he failed several times and became a joke in the world of immortality. He no longer believed in ghosts and gods, but he encountered ghosts and gods again and again, and finally befriended the King of Ghosts.
Faced with the injustice in the world, Shen Yi'an became an immortal and became a demon. Because of the enlightenment of the ghost king Wanwan, he stayed true to his true nature. And the Ghost King also regained his love for the world because of the male protagonist's company.
The two started each other's redemption.
Concept: The female protagonist stays because of the good deeds of the male protagonist in her previous life. Both the male protagonist and the female protagonist are dissatisfied with the world, but they redeem and protect each other.