Meet Enzo the puppy, one very special mutt. Enzo knows he's different from other dogs. He's sure of it. But people never understand him when he barks, and it drives him crazy! Life on the farm is pretty quiet--except when he races the cars that come down the barn road. Because Enzo is fast! But when Enzo meets a little girl named Zoë and her father, Denny, everything changes. Enzo embarks on an action-packed adventure as he makes the long journey from the farm to the city (bark twice for faster!), discovers just how big the world is, and finds the family that was truly meant to be his. New York Times bestselling author of The Art of Racing in the Rain Garth Stein tells this heartwarming story of how Enzo comes home.