This summer, Matilda is going on holiday with her friends, the Jolley-Rogers. Their destination is the island of Scurvy Sands – a favourite holiday destination for pirates. When Matilda arrives, the swashbuckling residents are none-too impressed with her. She has clean teeth, tidy clothes and doesn’t smell like she’s been at sea for six months – they are certain she cannot be trusted. But when Matilda discovers the secret of the legendary treasure of Scurvy Sands, the pirates are very quick to change their minds.