Raised as brothers in an orphanage, Ba-Woo and Joseph take opposite paths—Joseph becoming a priest and Ba-Woo becoming an underground fighting champion. However, when Joseph awakens as the great demon Lucifer and massacres the residents of their orphanage, their brotherly relationship turns into one fueled by revenge. In order to bring Joseph to justice, Ba-Woo sets off on a relentless pursuit of him and his cult. As threats mount and doubts creep in, can Ba-Woo’s powerful fists and allies overcome Joseph’s overwhelming supernatural powers and influence? (Source: WEBTOON)