At the end of the 19th century and the beginning of the 20th century, the Demon Lord appeared and all life was devastated. Humans used the five elements they practiced to suppress it. Finally, Pluto sealed it with blood in exchange for temporary peace. Now the Demon Lord is ready to move, but Pluto does not know where he is. Xiao Ran, the son of the devil who is feared and despised by everyone, has become the only possibility, but he does not want to save the common people.
"The survival of this world has nothing to do with me. I don't want to save the common people, I just want to protect you."