"Wade, Lily, Darrell, and Becca fly from Texas to Germany for the funeral of an old family friend. But instead of just paying their respects, they wind up on a dangerous, mind-blowing quest to unlock an ancient, guarded secret that could destroy the fate of the world"--

Jack Buckles, a thirteenth-generation tracker whose senses are on the fritz, and Gwen Kincaid, a clerk hoping to become an apprentice quartermaster, are framed for stealing a legendary jewel--one of a set of rubies thought to bring the owner loyalty, knowledge, and power--and they must locate the remaining rubies before the thief does or risk his unleashing a reign of terror worse than Genghis Khan's.