While going through the possessions of a deceased guest who owed them money, the mistress of the inn and her son find a treasure map that leads them to a pirate's fortune as well as great danger.
During one of his several adventurous voyages in the 1600s, an Englishman becomes the sole survivor of a shipwreck and lives for nearly thirty years on a deserted island. Illustrated notes throughout the text explain the historical background of the story.