Sheriff Deputy Rick Grimes gets shot in combat and awakens to a zombie apocalypse. He meets a group on the outskirts of Atlanta and soon, becomes their leader. The walkers (what they call zombies) feed on the living, so they try to move to different and safer locations to survive.
Rick Grimes was the sheriff at King County police office, until one day him and his partner Shane Walsh get a call about two men in a car with guns, during that call Rick gets shot and goes into a coma, he wakes up to a world where the dead come back to life.
Sheriff Deputy Rick Grimes wakes up from a coma, to learn the world is in ruins, and must lead a group of survivors to stay alive.