An action-packed pirate story, with bloodcurdling deaths, terrifying ghosts and adventures galore on the high seas. Orphan Jack Holborn stows away on a ship, little guessing the dangers and excitements that lie on his journey ahead. Before long he finds himself caught up in the middle of a mystery surrounding his long-lost mother, but before he can discover the truth, he has to survive the quest through an eerie African jungle for a famous diamond, worth more than Jack's wildest dreams.