Eva Nine is a twelve-year-old girl who has lived her entire life in an underground sanctuary, raised by a robot named Muthr. When her home is attacked by a mysterious hunter, Eva is forced to flee to the surface of a strange planet called Orbona. With only a crumbling picture of a girl, a robot, and the word 'WondLa' as clues, she embarks on a thrilling adventure to discover who she really is, who she can trust, and if there are any other humans left in the universe.