Cut off from the outside world, Clearfield struggles to rebuild and after a few months their meager supplies are running low. When a faint radio signal reaches them that Pittsburgh still stands, a small expedition is quickly assembled to discover if the message was true and if it was, to return with as many provisions as possible. Liz, Mike, and their friends volunteer to lead the expedition to Pittsburgh. It will be a dangerous journey with no guarantee that their destination will be the safe haven they are hoping for. But if Clearfield is to survive, then the risk must be taken.