When the world is plagued by a Demonic Armageddon, an orphaned girl named Allison fights to survive in the ruins of civilization. Having lost everything, she scavenges the desolate world, relying on her wit and determination. One day, she crosses paths with Evan, a shy, scarred boy who has also managed to survive against impossible odds. Though wary at first, they soon form a bond, trusting each other as they navigate the horrors around them. Armed with a sword she claimed from a fallen demon, Allison becomes a fierce warrior, cutting down the monstrous creatures that threaten their existence. Evan, wielding a double-sided axe, fights alongside her, his fear gradually giving way to courage. Together, they traverse the nightmarish landscape, searching for safety, answers, and perhaps even hope in a world overrun by darkness.