Martin goes on a school trip to a museum where there is an exhibition of pirates, and he decides to see where are the things of an old pirate that was told to have supernatural powers. Taking a medallion with him, Martin, or maybe "Captain Blood" now, he's gotten Java and his teacher under his spell and is out to find the treasure that can raise the spirits of his crew.
Pendant que Martin et l'équipe sont en visite scolaire au Musée de la Marine, Martin s'éclipse du groupe. Il a hâte d'examiner les objets venant d'un vaisseau légendaire qui fût autrefois commandé par un pirate fantôme en maraude. Alors que Martin fouine dans l'exposition, il libère sans le savoir et sans le vouloir l'esprit du malfaisant pirate.
