So begins their sojourn among the sea fairies. They see amazing sights in the land of Queen Aquarine and King Anko (including an octopus who is mortified to learn that he's the symbol of the Standard Oil Company). They also encounter a villain called Zog the Magician, a monstrous hybrid of man, animal, and fish. Zog and his sea devils capture them and hold them prisoner. The two protagonists discover that many sailors thought to have been drowned have actually been captured and enslaved by Zog. Trot and Cap'n Bill survive Zog's challenges, and the villain is eventually defeated by the forces of good. Trot and Cap'n Bill are returned to human form, safe and dry after their undersea adventure.