On a shopping errand for his older sister back home, Kazuya heads for Jiangtan, a department store in the capital city of Saubreme. One of the things on his shopping list is a piece of merchandise based on the Blue Rose, a blue diamond once owned by the royal family, but stolen during the Great War. Meanwhile, Victorique is at home with a cold and Blois is in the capital trying to track down smugglers of stolen works of art.

Two visiting outsiders have been murdered at the village's midsummer festival, but Victorique solves the mystery of their deaths. However, the village elder claims, "This isn't Saubure" and won't allow the murderer to stand trial. And then, Victorique and Kazuya are on the verge of proving Cordelia Gallo innocent of the crime she was found guilty of 20 years earlier.

Kazuya and Victorique arrive at the Village of the Gray Wolves. The villagers speak of a maid, Cordelia Gallo, who murdered the former village elder, Theodore. She was expelled from the village from her crime, but now, Victorique aims to prove the woman's innocence. To that end, Victorique and Kazuya head for the house she once lived in...

Ghost story-loving Avril tells Kazuya about the rumor of a gray wolf who can speak the human tongue. Soon after, the two of them become involved in the theft of a Dresden plate at an open-air market. Victorique effortlessly solves that mystery, but the newspaper has no information about the case being cracked. Instead, the paper prints a classified ad invitation to the upcoming summer solstice festival at the Village of Gray Wolves!

Right after the mummy was discovered, Kazuya saw Avril holding a purple book in the crypt, and he can't get it out of his mind. When he consults Victorique about it, she locates the book without a moment's hesitation. Did Avril hide it? Meanwhile, there are rumors that the successor to the notorious Phantom Thief Kuiaran is coming to the village.

One morning, when Kazuya is walking down the road to the village, he sees someone racing by on a motorbike. In the next instant, the driver's head is soaring through the air. Kazuya, a witness to the peculiar death, is arrested for suspicion of murder. Meanwhile, a new foreign exchange student arrives at the academy, Avril from England. And a mummified knight is discovered in the school's long-unused crypt?!

Victorique and the others not only realize that the ship they're on is a replica of the Queen Berry, but also that the deadly events of ten years ago are playing out again. Facing the possibility of being murdered at every turn, the survivors begin to suspect each other, when suddenly, Ned, the English actor, dies before Kazuya's very eyes!

With their invitation to Roxane in hand, Kazuya and Victorique join the "Miniature Garden Box Evening" party on board a ship. While eating with great gusto, they unwittingly drift off to sleep, and when they wake up, Victorique notices a difference amongst their fellow guests...

The time is 1924, the place a small nation with a long, majestic history to be proud of, the kingdom of Saubure. The prestigious St. Marguerite's Academy, a school that caters to the children of aristocrats, gets a new arrival, Kujo Kazuya, an exchange student from an Eastern island nation. One day, in a botanical garden at the very top of the academy's library tower, Kazuya encounters a girl who is as beautiful as a doll...