After years of traveling through space, a crew of humans has finally found an uninhabited world to colonize. Almost twelve-year-old twins Evelynn and Emery Linn decide to sneak out and explore their new home. But on the surface, Evelynn starts noticing troubling signs. Plants curl tightly around her finger, as if they were alive. Strange tracks lead off into a dark cavern. Evelynn can't help but wonder-are they truly alone on this planet?