Abel, Tres, and Esther set out to meet with the rest of AX after Gyula's death, and as they set out on a new mission, they face many challenges, including a formidable vampire, a bloodsucking tree, and a dangerous mermaid.
Radu's plans to betray Ion are threatened by the arrival of Brother Petros and his Department of Inquisition, and Abel, wakened from his fight with Petros, is struggling to keep control as the battle rages on.
The injured Petros, accompanied by the Vatican agents, head east to return Ion to the Empire, but their journey is threatened by an artificial sandstorm unleashed by Radu, who is hoping to destroy the city of Carthage.
Esther, a nun in the city of Istavan, crosses paths with Abel Nightroad, a priest sent from the Vatican to stop the local order of vampires, and the two form a holy alliance to stop the evil that threatens the world.
