When the world is under attack by a monstrous and unstoppable enemy, the only way to fight back is with warriors who have already died! Sidestepping a gruesome fate in a subway crash, Hibiki, Daichi, and Io find themselves recruited into the ranks of the Devil Summoners! When each clash comes with a clock counting down to Armageddon, it’s the ultimate conflict between good and evil, as the living, the dead and the demonic combine forces to send the invaders straight back to Hell.