After a zombie epidemic, R (a zombie) rescues Julie (a human survivor) from a zombie attack. The two form a special relationship in their struggle for survival, R becomes increasingly more human, setting off a chain of events that begins to transform the other zombies and maybe even the whole lifeless world.

Waking up in an empty hospital after weeks in a coma, County Sheriff Rick Grimes finds himself alone. The world he knows is gone, ravaged by a zombie epidemic.

The group aboard the Abigail is unaware of the true breadth and depth of the apocalypse that surrounds them; they assume there is still a chance that some city, state, or nation might be unaffected -- some place that the infection has not reached. But as Operation Cobalt goes into full effect, the military bombs the Southland to cleanse it of the Infected, driving the Dead toward the sea. Just because zombies can't swim, doesn't mean there isn't...