Five years after an unknown virus ended human civilization, ex‑surgeon Maya Cole got infected during childbirth. She, her young son Leo and their mutated cat King are conscious zombies. They hide in the Fallen Zone, saving survivors while avoiding living humans. Damien Knox, the powerful, harsh Magistrate of South City Safe Zone and Maya’s former secret lover, finds her on a ruin patrol. Heartbroken, he wrongly believes she built a new family with someone else. To shield Maya and Leo from the scheming Dr. Yvonne Cross, who wants them for experiments, Damien makes her a special Ember Corps consultant and links them with a symbiotic lock. Leo sneaks into the dangerous North City Fallen Zone, mistakes rebel leader Blake Sullivan for his father, and unlocks the power to control high‑level mutants. Maya awakens Zombie King abilities soon after. Fighting evolved zombies and buried conspiracies together, Damien will uncover the apocalypse’s biggest secret: the gentle zombie boy is his son.
