Elzy Rodriguez still can't remember how--or where--she survived the fall of civilization. It's been twenty years. All she has now is a few memories of the trees she played among as a child. Fortunately, Elzy is apprenticed to the brilliant and mysterious itinerant ecologist, Andy Cote. If anyone can figure out where the forests of her memory grew, he can. But Andy, too, is lost. When the old civilization fell, his son vanished. Now he has questions he can neither answer nor let go. In helping Elzy reclaim her home, can Andy, too, find peace? Part scientific detective story, part post-apocalyptic travelogue, is at heart a tale about what happens you lose everything.