After the apocalypse, the Earth is nothing but dust and ruin. From the heart of the desert, a single city rises�ruled by the Demon King who brought the world to its knees. To save his closest friend, Summer, Esper joins a band of wanderers bound by uneasy alliances and hidden motives. Their path leads straight into the Demon King�s domain... But the truth awaiting them inside the City of Demons may rewrite everything they thought they knew about the end�and the beginning�of the world.