Sarah and David have survived the zombie apocalypse. They stood side by side and fought mad scientists, the undead, and even bionic monsters . . . until the unthinkable happened. A zombie bite. But not even that could stop them. Now, with a possible cure in hand, they're headed east, looking for a safe zone behind the rumored "Wall." They're feeling pretty optimistic. That is, until Dave stops sleeping and starts lifting huge objects. Eat. Slay. Love. Because they haven't got a prayer.