"Adventure starts in the Grand Canyon where Isaiah, Sadie, and Ethan discover a small box engraved with their names. The box contains a hidden message with mysterious clues that lead them on a scavenger hunt. As the kids are solving the carefully crafted riddles on what seems to be a wild goose chase, they stumble across a clue scribbled on a ripped piece of fabric. zHelp me,y it reads. The kids are stumped by this clue. What can it possibly mean? Why is it so hard for them to figure out?" --,Publisher's description.