Tom loves to fool around. He fools around with dropping things from bridges into rivers and he fools around with barrels in alleys. He fools around so much that his maiden aunt, Miss Fidget Wonkham-Strong (who wears an iron hat and takes no nonsense from anyone), sends for Captain Najork and his hired sportsmen to teach Tom a lesson. "Captain Najork," says Aunt Fidget Wonkham-Strong, "is seven feet tall, with eyes like fire and a voice like thunder. He teaches fooling-around boys the lesson they so badly need, and it is not one that they soon forget." Captain Najork lays down a challenge: they will play womble, muck and speedball - in that order. And it turns out not to be Tom who gets taught a lesson after all!