When Elias and Alice's mother disappears in a nearby forest, the siblings quickly embark on a journey to find her. But nothing can prepare them for what lies ahead–not when they come face-to-face with a crew of aliens who whisk them away to a spaceship where they meet terrifying creatures, dangerous attackers, and a secret that changes all Alice and Elias have ever known about their family. Amid the mayhem, will Elias and Alice be able to traverse through the stars and find their mother?