The opening scene establishes the post-apocalyptic setting by showing abandoned cars on a highway with open doors, indicating chaos. Sheriff badges and arrows, the signature weapon of Daryl, are shown to introduce main characters. Scenes of a graveyard, forest, and rundown buildings establish the lonely, dangerous setting and passage of time. A brief extreme closeup of a bloodshot, zombie-like eye builds mystery and tension. The prison setting provides both danger and shelter. Throughout, symbols of destruction, isolation, and loss of civilization reinforce the horror genre and theme of survival.