Ben Mears has returned to his hometown to write a book about the supposedly haunted Marsten House. When people around the Marsten House start dying mysteriously, Mears discovers that the owner of the mansion is actually a vampire who is turning them into an army of undead slaves.

Biblia Second-hand Bookstore has been quietly open for business in some corner of Kamakura. Its owner is Shinokawa Shioriko, a young, pretty but introverted girl who is extremely shy around strangers and cannot interact well with people she meets for the first time. However, when it comes to knowledge of old books, no one can to compare to her. Talking about books makes Shioriko forget her shyness. In fact, she becomes eloquent and passionate. She unravels the mysteries and secrets associated with many old books with her vast knowledge and keen eye.