The archangel Gabriel has a score to settle. Rebellion is destroying the peace of Aaru, and the rebellious angel that started it all is still at the center. To end this troublemaker, Gabriel will need to descend to the physical world and interact with the one species that scares him the most - humans.
Assuming a physical form opens an angel to sensation in all its tempting glory. And in order to bring about angelic justice, Gabriel will need to discover what it really means to sin.