On a cursed island ravaged by a strange plague known as the Miasma, a king commands his alchemists to develop a cure to save his people. Yet this cure transforms the inhabitants into monsters! The king then decides to create an army using this dangerous elixir, but the situation swiftly spirals out of control... A prophecy foretells the arrival of an immortal hero, destined to bring peace by slaying the Demon King, the instigator of this chaos. Laure Esposito, a young guardian of the Order of Truth, must find this flame-haired chosen one to save the world from destruction. Good luck to her, because finding a cure for the Miasma? The chosen one couldn't care less. Bring peace? Above all, he just wants everyone to leave him the hell alone!