The Walking Dead is a post-apocalyptic thriller TV show about the survival of humans living in a world overrun by zombies. Each 45-minute episode aims to entertain viewers and keep them emotionally invested in the characters through dangerous situations and occasional character deaths. The show explores how different groups cope with the lawless new world and often face greater threats from other surviving humans rather than the zombies. The setting changes locations as the characters travel, and being bitten results in a quick death and reanimation as a zombie.