In a time when the cold, cold hellish demons come down to this world to prey on people, the supreme god of heaven, Indra, and the Four Heavenly Kings below him protect the world from the demons of hell. However, the supreme god, Indra, tries to take the protagonist, “Na-Sua,” away, saying that he is the reincarnation of someone he cherished, but when Na-Sua grabs his collar to stop him, Indra feels offended and cuts off Na-Sua’s arm. Na-Sua’s resentment toward Heaven reaches the hot, scorching Hell, the opposite side of the cold Hell, and Na-Sua acquires the arm of a scorching demon… Na-Sua, who has become neither human nor demon, tries to confront Heaven, who is fighting Hell in order to get his younger brother back.

(Source: KakaoPage, translated)