Max goes fishing with his friend Brian on the Isle of Man. Unfortunately, he doesn't turn out to be a great fisherman. After seeing how herrings are turned into kippers, he meets some Manx cats. Neither of us or the Tweenies know why the Manx cat doesn't have a tail. Well, Max explains the tale of the Manx cat "in the year 1800, the Manx kitten was born, but in 1850, when he turned into a Manx cat, he wasn't happy with his tail, so the first Monkey has his tail for swinging through the trees". Finally, Max shares the kippers with the friendly Manx cat.