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.

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.

Kujo and Avril explore one of the school's towers and Avril figures that it is related to the legend of Leviathan, an alchemist who lived there decades before. Victorique stumbles on a pop-up book containing a cryptic message aledgely from Leviathan himself and when a death occurs at the top of the tower, she decides to investigate by herself.

By the Spring of 1925, all the pieces of Albert's plan have fallen into place. Kujo has been deported and Victorique has long since been imprisoned in the Sauville royal palace. Using her wisdom, Albert exposes Jupiter Roget's identity as a Gray Wolf to the other nobility and runs him out, then persuades King Rupert to make an alliance with the rising power of Germany. In the Winter of 1925, while Kujo has been enlisted into the Japanese military, Albert is named the new Prime Minister of Sauville and has Grevil bring Victorique out during the ceremony to show off his power. However, sometime before the ceremony Cordelia switched places with Victorique, and confronts Albert, revealing his crimes to the entire country. When one of the Brian Roscoe twins stages a terrorist attack on the ceremony, Cordelia engages Albert in a swordfight using a pair of knives as weapons and successfully kills him, but is slain herself by one of Albert's minions. Meanwhile, the other Brian, who has taken Victorique away in a stagecoach, attempts to kill her to erase Cordelia's "pain."