Armageddons Children by Terry Brooks

In a post-apocalyptic world overrun by demons and mutated "once-men," the survivors struggle within fortified compounds or survive as street children in ruined cities. The narrative follows Logan Tom, a Knight of the Word tasked by a mystical Lady to find a magical "gypsy morph" who holds the key to humanity's salvation. Parallel to his journey, a group of street children called the Ghosts, led by a boy named Hawk, navigates the dangers of a decaying Seattle. These survivors face perilous landscapes and magical threats while seeking a legendary Promised Land away from the encroaching darkness. As compound defenses fail and demonic armies advance, the protagonists must embrace their latent powers and destinies to protect the innocent. Ultimately, the story highlights the endurance of the human spirit amidst a global collapse driven by void-born evil.