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. "Help me," it reads. The kids are stumped by this clue. What can it possibly mean?...

Jake, Amber, and Wes encounter new dangers and find their friendship tested as they follow the clues Jake's grandfather hid away in the old scrapbook. The stakes are higher, and the history goes deeper as the three kids put their heads together to solve a puzzle that is perhaps hundreds of years in the making.--Publisher description.