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...

Police officer Rick Grimes leads a group of survivors in a world overrun by zombies. The series explores how the living are changed by the realization that those who survive can be far more dangerous than the walking dead.