This book is a retelling of a Cornish fairy tale and legend called 'Jack the Giant Killer'. The tale is set during the reign of King Arthur and tells of a young Cornish farmer's son named Jack who is not only strong but so clever he easily confounds the learned with his penetrating wit. Jack encounters a livestock-eating giant called Cormoran and lures him to his death in a pit trap. Jack is dubbed 'Jack the Giant-Killer' for this feat and receives not only the giant's wealth, but a sword and belt to commemorate the event.