Willa's fondest dream is to own a bloodhound, and she wants it badly enough she's even willing to get A's in school to get it. When Poppy enters her world on Willa's twelfth birthday, it seems as if she's died and gone to heaven. True to her word, she works hard to train Poppy as a tracker, and Poppy proves to have a very special knack, even for a bloodhound. Then danger intrudes into Willa's happiness. She and her baby brother are carjacked, and their lives hang by a thread. Will Poppy's talented nose-and Willa's courage-be enough to save them?