A young girl returns home to find her parents missing and the house in disarray. She sits down to watch television, and the news reveals that five years earlier, a zombie outbreak killed off 4.5 billion people worldwide, 10 million of which are from the United States. After detonating a nuclear bomb over San Francisco and walling off New York City, the U.S. government declared the outbreak over and established a paramilitary force known as R-Division to hunt down and destroy the remaining zombies. The girl watches a Reality television series called ''Re-Kill'' that broadcasts live footage of R-Division squads. Commercials interrupt the show, showing attempts to repopulate the United States and reassure the populace.