Jerry Sharpe is an ex-marine and, for him, survival means protecting his family by any means necessary.

Susan is learning just how far a mother will go for her children. But how far will she go for a man she doubted before the bombs fell? As Jerry's training and instincts take over, she is certain of one thing - her children need her.

Melanie was going to go to college. Now, she is struggling to find a way to live in a world gone mad without losing sight of what she believes in.

Scotty has a new mission - more than survival. He was saved, and he'll be damned if he won't fight for what's right.

And Bill - Bill was locked up, but the power went out and the guards left. Now he and his fellow inmates have realised that everything is free for the taking . . . if you're strong enough to hold on to it.