In this new tale of terror, Romero creates a harrowing vision of a modern-day world where the walking dead roam a vast uninhabited wasteland and the living try to lead normal lives behind the high walls of a fortified city. A new society has been built by a hand of ruthless opportunists, who live in luxury in the towers of a skyscraper, high above the less fortunate citizens who must eke out a hard life on the streets below. With the survival of the city at stake, a group of mercenaries is called into action to protect the living from the evolving army of the dead waiting outside the city walls.