The episode begins with the appearance a mysterious blond man with "ash mauve" eyes interrogating an old scientist. The story then turns to a fairy doctor, that is, one who mediates between fairies and humans. The fairy doctor, Lydia Carlton, is called to London by her father. While on a ship headed for London with her fairy who looks like a cat Nico, she encounters a young man being held captive by the crew of the boat. He asks for her help in escaping from his captors and explains that they are trying to detain her also, for her help as a fairy doctor. Lydia decides that the best course of…