All But One?

John Blank is a simple, middle-class American who is suddenly thrust into a personal world of survival. He is caught totally off guard by the apocalyptic blast and struggles to comprehend and cope with all the unexpected by-products of this catastrophe. Why did this happen? Where did this come from? How bad is it? Am I the only survivor? These questions and more lead John on his journey of survival and discovery in his native homeland, North America.