Based on the comic book series of the same name, The Walking Dead tells the story of a small group of survivors living in the aftermath of a zombie apocalypse.[16] The first season mostly takes place in the Atlanta metropolitan area, and the second through fourth seasons in the surrounding countryside of northern Georgia, as the survivors search for a safe haven away from the shuffling hordes of predatory "walkers" or "biters" (as the zombies are referred to in the show), who devour any living thing they catch, and whose bite is infectious to humans. The plot focuses primarily on the dilemmas the group faces as they struggle to maintain their humanity during the day-to-day challenges of surviving in a hostile world. This includes battling the zombie hordes, coping with casualties, and dealing with predatory human survivors.
The group is led by Rick Grimes, who was a sheriff's deputy[3] before the zombie outbreak. At every turn they are faced with the horror of the walking zombies, the changing dynamic of their group, and hostility from the scattered remains of a struggling human populace who are focused on their own survival now that society's structures have collapsed.