The series focuses on Makoto Shiranui, a boy who travels to Tokyo to become the apprentice of Mamoru Hoshisato, a world-renowned magician and friend of his parents. Ever since watching a performance by Mamoru and his wife Maive, he has dreamed of becoming a magician. Their daughter Kana (nicknamed Hatena) has been Makoto's friend since childhood. Although Tokyo is experiencing a spate of burglaries committed by a beautiful female thief, Makoto feels safe as long as Hatena is around. Upon arriving at the Hoshisato residence, a haunted mansion, he is greeted by the family butler Jeeves and the maid Emma, and reunites with Hatena, only to discover that they no longer get along well.