The Last Safe Zone

When the sky splits open above Denver and the System names humanity a failed species, Caleb Rusk is trapped in the basement of a half-collapsed hospital with a dozen strangers, a dying sister, and a notification only he can see: ERROR CLASS DETECTED. Outside, the city mutates into hunting grounds where sewer-born ghouls, glass-skinned angels, and living weather slaughter anyone caught beyond the shrinking blue light of the first Safe Zones.

Caleb awakens as a Gravebound Warden, a class built to command the dead—except every corpse he raises whispers with the memories of who they used to be. To keep his sister alive, he must lead survivors through monster waves, ration wars, and the rise of factions willing to trade human lives for power. But the Safe Zones are not shelters. They are farms. And something beneath the System is counting every soul that dies inside them.