Crystal and Freddie McKenzie are middle school siblings who annoy each other much of the time, but they share a love for exploring the wilderness near their home. When their frequent visits to the woods result in an encounter with a creature-a dark, massive, mysterious monster-their lives are changed forever. At first they're certain they won't survive this terror. The creature is huge and powerful, unleashing waves of primal fear exceeding anything that the kids have faced in their scariest dreams. Then they're not sure if they could ever tell anyone about what has happened. Who would...