The airship Tristan is hijacked by a member of the Fleurs du Mal who demands the release of his comrades held in Vatican captivity. But one passenger stands in his way - Abel Nightroad.

After returning to Rome and joining AX, Sister Esther encounters a crying boy on the vast grounds. Following her attempts at comforting him, she learns that he is none other than Pope Alessandro.

Allies and enemies, both human and vampire, work together against the enemy of the world - the Contra Mundi. Resurrected from the grave, not even death can keep Abel Nightroad from his fate.