When twelve-year-old Jasper Ludlow's parents flee the city, he gets left behind and finds refuge on The Travelling Restaurant, a sailing ship captained by old Dr Rocket and crewed by feisty Polly. Jasper faces challenges, adventures, storms and hungry pirates. Should he go in search of his parents, or his lost baby sister? Who should he trust? And why is Lady Gall, Provisional Monarch of Fontania, hunting him?