Suddenly the world is overrun with zombies. Joelle 'Joe' Vito is trying to make it to Phoenix Arizona, because she has heard that it's safe there. When she is about to leave California she meets people she had known before the apokalypse - a policeman, a baker, an older pensionist and two teenagers -, and they team up to try to survive. On their way to Phoenix they meet a family of three. A blonde, her son and her husband. Instantly Joe takes interest in this woman, as she thinks there is something weird about the family. But it's hard to survive out there, they lose people on the way. The strongest survive. Is Phoenix really as safe as they say? And who the hell is Callaghan?