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. They try to secure the necessary proof, only to encounter someone else after the book.

Jeanne says something that strikes fear into Vanitas. Lord Ruthven makes Noé swear an oath. Olivier is at his wits' end over Roland's obsession. Noé has a consuming thirst. Vanitas hears a certain monster has returned and sets out with Noé to investigate.

Vanitas and Jeanne spend a steamy yet awkward night together. Tempers flare when Vanitas learns Dante withheld information. Though they all know they're at cross-purposes, they set out to find Noé. Meanwhile, Noé wakes to find himself in the Beast's lair.

Vanitas identifies Chloé's malnomen. Astolfo's hatred spirals out of control. Chloé must choose between annihilation and a dismal life. Vanitas remembers he doesn't have to be alone, but is it too late? Will our heroes save Gévaudan and themselves?

Mikhail pleads with Vanitas to join him. Dominque comes to terms with her inner self. Mikhail unleashes terror on his foes, but the book exacts a toll. An unexpected figure appears amid the ruins. Vanitas mends fences with Noé and parts ways with Mikhail.