In another world that the king of Satan has mastered, the remaining humanity must accept this bitter reality. However, dissatisfied with it, the devil king deliberately invites humans from the earth to overcome him. From the beginning this figure of the hero will appear ... Is one of the many humans of the earth able to defeat it? Or will they just be a filler of the devil king's time? This is where the story of a human story against the king of Devils begins for the umpteenth time. ....