While the Jolley-Rogers are enjoying a day at the beach, little sister Nugget to
ddles into a cave. When she doesn't come out again, Mum goes in to find her. And
, when Mum doesn't return, Dad follows.
Jim Lad is suspicious and sends Bones
the dog to Dull-on-Sea to find Matilda before he too ventures in to the cave. J
im Lad soon discovers a magical haul of treasure inside the cave has bewitched h
is family. Will the cave's spooky inhabitant, a sinister sea witch, keep them pr
isoner forever, or can Matilda and Bones come to the Jolley-Rogers' rescue?
