In the aftermath of the destruction, Shaun finds himself trapped by the winter. With little other choice, he joins a group of survivors doing the best they can. His idea of "best" isn't always shared by the group, though. But before the weather breaks, when he wants to resume his journey, they all face conflict. Miles away, doing the best that she can, Abbie is adapting to life without power; her own situation is far from ideal. After the sound of the falling bombs fade, as the dark world they live in tries to recover, they have to find a way to adapt to their new reality.