This book is about twins Connor and Grace who get shipwrecked in the middle of the ocean in the year 2505. Their father had recently died and they decided to escape their quiet little hometown of Crescent Moon Bay on the east coast of Australia. Connor is saved by a pirate ship, while Grace is rescued by a mysterious Vampirate ship. Each twin thought the other had drowned. Conner had the chance to join the crew on the pirate ship, but Grace is in great danger on the ship of vampires. This book tells part of the extraordinary adventures of twins Connor and Grace aboard a pirate ship and a ship of vampires in the future.