Ratbridge residents are clamouring for miracle medicine Black Jollop, but a shortage calls for action! The Nautical Laundry must journey afar to gather its secret ingredient.
But things aren’t what they seem... and soon the ship is under attack. Can Arthur and his friends triumph and return to Ratbridge with a cure for all its ills?
A fantastically funny tale of pirates, poison and monsters from bestselling author Alan Snow.