The series is adapted from Fantasy novel of the same name by writer Bu Feiyan and stars Xu Kai, Wu Jiayi, Hankiz Omar, Zhou Junchao, Li Junchen, and Yu Xintong.
The story is set against the backdrop of the prosperous Tang Dynasty in an era where humans and demons coexisted.
The arrival of Li Xuan, a human and demon hybrid, breaks the fragile peace.
During this time, Li Xuan and Su You Lian develop a complicated relationships.
As Li Xuan eventually becomes a hero to the people, he faces a dilemma of having to decide where his allegiance lies.