Wondla

All hope for a peaceful coexistence between humankind and aliens seems lost in the third installment of the WondLa trilogy. Eva Nine has gone into hiding for fear of luring the wicked Loroc to her companions. However, news of the city Solas being captured by the human leader, Cadmus Pryde, forces Eva into action once again. With help from an unlikely ally, Eva tries to thwart Loroc’s ultimate plan for both mankind and the alien life on Orbona.

A Hero for WondLa by DiTerlizzi, Tony [Simon & Schuster Books for Young Reade...

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.