In the town of Broad Run, West Virginia...Vance Archer and Marybeth Wilkins, a pair of adventurous seventh graders, have discovered an exciting activity called geocaching-a kind of scavenger hunt using GPS technology-which leads them after hidden treasures in the woods around their community. However, on one of their outings, they encounter a frightening, half-seen creature with glowing red eyes watching them from the shadows. Soon, Vance begins to...