Sir Turnip is one centimetre too short to take part in a jousting tournament due to be held in the castle above the clouds. The little wizard Wobbletooth wants to cast a spell to help him. But, once again, his spell goes horribly wrong! Instead, he conjures up a giant bluebottle and, as you can imagine, a great deal of chaos and mayhem. But Sir Turnip isn't about to give up! He's convinced that pirates have stolen his missing centimetre. And so he sets off to the seaside with his friends – the little wizard Wobbletooth, Princess Pustilla and the dragon Flutteric – to get it back.