All roads lead to Rome and the Vatican, as Abel, Tres, and Esther set off to meet up with the rest of AX after the death of Gyula and the destruction of Esther's home church in Istavan. Esther's on a new mission, seeking to find herself and the source of her suffering, and new orders from the Vatican may lead to the answer. But the journey is filled with many twisted turns, including a formidable vampire, a bloodsucking tree, and a dangerously beautiful mermaid!