After discovering a genuine dinosaur fossil in the woods outside of his Grandpa's cabin, Robert is eager to look for more bones. When his new friend Emily tags along, they find something a lot cooler than dusty bones. A crashed alien spaceship! Inside the spaceship are four alien siblings trying to find their way home. Not only are they on the wrong planet, they might even be in the wrong galaxy. Can Robert and Emily keep them a secret while the aliens fix their spaceship? Can the aliens figure out where they are and how to get home? No one is prepared for the truth.