
Set in a fictional European country in 1924, a Japanese exchange student meets a mysterious, brilliant girl who only leaves the library to sleep. Her brother, a detective, relies on her exceptional mind to solve difficult mysteries.

Kazuya Kujo is an exchange student from Japan. While exploring the library he encounters Victorique de Blois. While talking her extravagant brother Grevil arrives and questions Victorique through Kujo about a locked room murder. Victorique sets her mind to the task and comes up with an improbable but entirely logical answer.

Posing as the murdered Soothsayer, Roxane and her servant, Victorique and Kujo have boarded the Queen Merry. Once on board they discover they have fallen into another mystery, this one with deadly intent towards everyone.

The trap closes and the architect behind it is revealed or is he? Victorique picks up on a larger scheme that set much larger things in motion. The question is are the still in motion to this day?

Kazuya witnesses the bizarre beheading of a man riding a motorcycle. While a suspect matching the description Victorique surmised is arrested a new girl joins Kazuya’s school who also matches the description.

The case of the beheaded man is brought to a close after Victorique reveals the true identity of the new student at the school.

Kazuya is stumped by the disappearance of a valuable plate from a local bazaar. At the same time he sees an advertisement in the paper call for all “Descendants of the Gray Wolves” to return to their ancestral home. After telling Victorique about it she insists on going to the town immediately.

Victorica and Kujo explore the "Village of the Gray Wolves" where her mother lived in search for clues to prove her innocence, but Victorica gets disappointed when she uncovers the truth and figures that she lacks the means to clear her name. To complicate matters, two of the tourists who were visiting the village with them are killed among strange circumstances.

Victorica manages to find the culprit behind the recent deaths at the village and to clear her mother's name by exposing the woman who framed her. However, when the woman attempts to escape, she starts torching the entire village, and Kujo must confront her while protecting Victorica with his life.

Victorica gets a fever as Kujo sets out alone for some errands in Sauville. While searching for a souvenir for his sister, he meets a girl among a pile of mannequins. The girl asks for help, but when he gets back to the department store with the Inspector, she is nowhere to be found. Kujo calls Victorica by phone to ask her help, but the call is cut short as he is taken away.

Kujo encounters the same girl he met at the department store, and with the help of hers and a bright homeless boy, he manages to put the police back on the case. Kujo and Grevil then ask Victorique's opinion about the store, just to find that she already had made some research about it, and she comes with a plan to expose the culprits.
Available on: TV Tokyo, TV Aichi, TV Osaka, TVQ, AT-X