Nie Li, the strongest Demon Spiritualist in his past life was standing at the pinnacle of the martial world. However, he lost his life during the battle with the Sage Emperor and the six Deity rank beasts. His soul was then reborn to a time when he was only thirteen years old. Although he's the weakest in his class with the lowest talent with a red soul realm, with the aid of the vast knowledge that he accumulated from his previous life, he'll train faster than anyone else.

He will try to protect the city, which in the coming future will be assaulted by the demon beasts and end up destroyed; as well as protecting his lover, friends and family, who all died by the beasts assaults, and destroy the Sacred Family who abandoned their duties and betrayed the city in his past life.