Genesis of Shannara: Armageddon's Children (Book 1)

Fifty years from now, our world is unrecognisable. Pollution and warfare have poisoned the skies, the water and the soil. Pockets of society still exist, living in highly fortified strongholds, while those outside the walls roam the landscape - either predator or prey. But even these isolated compounds are not safe; armies of demons and once-men assault their defences, and inevitably, one by one, they succumb. Civilisation has fallen and anarchy is the only law.
Logan Tom and Angel Perez are