 One day, Trot wishes that she could see a mermaid; her wish is overheard, and granted the next day.The mermaids explain to Trot, and the distressed Cap'n Bill, that they are benevolent fairies; when they offer Trot a chance to pay a visit to their land in mermaid form, Trot is enthusiastic, and Bill is too loyal to let her go off without him.So begins their sojourn among the sea fairies.