Harry is a lovely little white dog with black spots, but Harry is also a Dirty Dog. He likes most things but he doesn't like the bath any more than Sixer does. So, when he hears the taps running, he steals the scrubbing brush, buries it in the back garden in his special hiding place, and, just to make absolutely, very, most certainly sure he's avoided all ablutions, runs away from home. Harry has great fun while he's running away because most things are an adventure to him. Bath forgotten, he plays with the men mending the road and gets rather dirty from the tarmac, he plays by the railway and gets even dirtier from the fumes, and he has a great game of tag with the other dogs getting dirtier still with all the mud in the fields. Finally he finds a coal lorry and slides down its chute getting himself the dirtiest of all. He's now a black dog with not very many white spots at all. He's also a hungry dog, and a tired one, and he's beginning to worry that his family will think he's really run away, forever.