Joe's garden has been invaded by fairies and he's totally fed up. Since prim, girly cousin Sara-Jane arrived to stay with Joe and his sisters, the climbing frame's become a fairy bower, there's fairy cakes for tea, and no one wants to do his assault course anymore. Then Joe meets the new neighbor—another girl, to his horror. But Mel shows more interest in boat battles and croquet than wings and gossamer—and she has a splendid idea for putting the fairies to flight for good.