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.

Abel encounters a girl with abilities both strange and deadly. When she attempts to flee, Abel must turn against his own in order to save her life.

The Rosen Kreuz has surfaced again. Fueling the personal revenge of others for their own evil ends, the nefarious order could plunge both races back into the dark days of Armageddon.

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.

AX scrambles to prevent Rosen Kreuz from destroying Rome with the Silent Noise device, but they may have to act without Abel. Driven by despair, Abel considers turning in his gun.

Under house arrest, Lady Caterina finds herself face to face with a manipulative enemy. Abel's efforts to save her result in an encounter with a dangerous new foe.

Whispers of an assassination attempt on the Lady Caterina turn agents of the Vatican against each other. Abel seeks a safe path through the hostilities harbored by both sides, and Esther must be the guide.

As the Puppet Master, a face from Esther's past, creates chaos, the Rosen Kreuz formulates a murderous plan to inflame the hatred between the two races.

Cain and Isaak Fernand von Kampfer begin the first phase of their quest to destroy the people of the world, both human and vampire. Meanwhile, a startling revelation awaits Esther, one that will forever reshape her destiny.

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.