Teddy (John Glover) brought about his vision of "The End" when he detonated nuclear warheads across the Texas landscape, but it will be up to the survivors to decide what "The Beginning" will look like. In this world devoid of light and hope, where the outside air is just as deadly as the walkers they face, the ones who lived will find out who they really are and what they're really made of. Some will rise to the occasion. Others will find new purpose. Still others will redefine themselves -- even if it comes at a terrible cost to those they once considered family.