In nineteenth-century France, humans and vampires coexist; Noé is traveling to Paris in search of The Book of Vanitas, a book capable of unleashing a curse upon all vampires.

Noé searches for the "Book of Vanitas" and meets a questionable stranger aboard an airship to Paris.

Vanitas and Noé are in a bind until an invitation arrives; at their benefactor's, they find they must prove the Book of Vanitas can restore a vampire's true name.