The Abyss Demon Lord Asmodeus, who once stood at the top of the world, was betrayed by the seven demon gods under his command and the gods of light in the final battle that was about to touch the throne of God, and his soul was destroyed. However, a trace of his soul was miraculously reborn a thousand years later and possessed the body of a border scout named Ren in the Mortal Kingdom who was about to die from the beast tide.
Facing the hypocritical bright order built by his former enemies and a world that has long forgotten him, Ren (Asmodeus) smiled. He has no golden fingers, because he himself is a walking treasure trove of natural disasters and forbidden knowledge. With his precise memory of the nature of magic, the weaknesses of gods, ancient ruins, and the future direction, he will make huge waves in this "bright" era. He worked step by step, using his mortal body to do the things of a demon king, conquering old tribes, stealing divine power, and exposing the corruption of the Holy See and the hypocrisy of the gods. He wants those aloof gods to remember again that the Abyss Demon Lord who once made the whole world tremble has returned! This time, he not only wants revenge, but also wants to tear the gods from their thrones with his own hands and rebuild the Abyss Throne that belongs to him.