Lydia Carlton, a fairy doctor able to speak with fae creatures most people can't see, lives quietly in Victorian London until Edgar Ashenbert forces his way into her life. Claiming the title of Earl and hunting a legendary sword that would prove it, Edgar hires Lydia as his adviser despite the rumors that follow him, among them a string of burglaries with his fingerprints all over them. This manga condenses the same story told across the original light novels.