Ribsy is having a rough week. He has a nasty little flea nipping away at him underneath his collar. No matter how hard he tries, he can't seem to get at it. To make matters worse, Henry and his parents just got a brand-new station wagon, and they won't let him inside it; they don't want his muddy paw prints on the seats or his nose smudges on the windows. This is not fair. So when Henry and his parents drive off to the shopping center, Ribsy chases after them until they are forced to stop and let him in. And Henry finally removes his collar so he can scratch away the flea. Heaven at last! Then the trouble begins. While Henry and his parents are busy shopping, Ribsy lowers the car window and pops out to play with a Pomeranian. Then he jumps into the wrong station wagon! Soon Ribsy is taken in by one person after another, and no one knows where he lives because Henry removed his collar! Will Ribsy ever be able to find his way home? Follow his trail, and tail, in this exciting canine adventure.