Mim Cohen roams the world in a travelling bookshop with her dad, brother and a horse called Flossy. Flossy leads them where she will, to the place where they're needed most ... the place where the perfect book will find its way home.

Now Mim has arrived in Puddling Muddlebury in the Cotswolds, England, just in time for the annual dog show. The judge, Lord Melville-Timms, is in a pickle. He has judged cakes and flowers and vegetables, but never a dog show. Furthermore, his beloved bulldog, Bubbles, is the most disobedient dog in the county.

Mim knows they're here to help Lord Melville-Timms. To give him courage. To prevent a dog show disaster. If only Mim could find Lord Melville-Timms the right book. If only Dad would stop giving everyone the wrong book.