The story takes place just before Cartaphilus took a nap and Chise started working as an auditor at the academy. Elias and his friends assist Chise in preparing for the academy, while Spriggan visits the mansion on a spooky horse with the words, "The appearance of the ghost hunting association is unusual this time." Gabriel, an ordinary boy who had recently moved from London, was bored of his surroundings, which included parting with friends, being in an unfamiliar location, and everything else. Sitting by the window, he noticed a purple smoke and decided to chase it down in order to escape his boredom. Though it should not, the boy's world begins to converge with the wizards who live on the island.