Ryan Wheeler wakes up to find that the world he knew disappeared a long time ago. As Ryan begins to navigate this new life, he is haunted by the catastrophic events that led not only to the destruction of his world but to the loss of his beloved family. Alice Stewart was born and raised in the underground city of Haven. She has dedicated her life to solving the inherent problems of a city built with limited resources. With the arrival of a stranger, Alice begins to wonder if the answers she needs lie beyond the only home that she has ever known. Together, Ryan and Alice set off on a journey to save the people of Haven. What they find above ground is beyond what either of them could have ever imagined.