Rick Grimes, a former sheriff, was separated from his family after the world had been taken by the dead. After his time in the hospital, he had to adjust to the new world around him. Meanwhile, his wife Lori, and their two children, Carl and Lorena have taken refuge at a camp lead by his best friend, Shane Walsh. - He travels to Atlanta to find his family, only to be ambushed by a herd of the undead; the Walkers. He is saved by a group of friendly people, or so it seems...