Cantankerous old King Chisel is a ruler without an heir. He is persuaded to create a competition called the Crown Duels, inviting the best kids from five regions of his country to vie with one another to become king or queen one day. This gruesome gang of children will compete in a multi-discipline game of knock-out to determine the winner. Chaos ensues, with pushy parents, wild sabotaging, morally questionable tactics, tantrums and the ultimate shock result: it is unassuming hero Harry Sponge who will be the triumphant tortoise to their hot-air hares. The wildly funny, brilliantly silly adventure from the best-selling author and illustrator of Escape the Rooms and The Fart That Change the World.