Six months after receiving a letter with news of his grandfather's death, Huey arrives at his grandfather's estate, only to discover a young girl among his grandfather's library. To his surprise, the young girl claims to be the one called Dalian, whom his grandfather had entrusted to Huey to take care of, along with the Bibliotheca Mystica de Dantalian. After becoming acquainted, Huey is invited to Henry Conrad's estate, Conrad being an old acquaintance of his grandfather...