Eva Nine is a curious and sensitive twelve-year-old who has existed only in a subterranean home called Sanctuary, cared for by a robot named Muthr. Eva's great desire is to go aboveground, and her wish comes true, though not as she had imagined. On the surface, Eva goes in search of other humans—she has never met one—and soon meets both friend and foe.

Living in isolation with a robot on what appears to be an alien world populated with bizarre life forms, a twelve-year-old human girl called Eva Nine sets out on an adventurous journey to find others like her. Features "augmented reality" pages, in which readers with a webcam can access additional information about Eva Nine's world.