He is a Demon, an indentured prostitute with the power to weave an addictive sexual hallucination. She is an Angel, a human priestess endowed with supernatural powers of healing and persuasion. Together they must unravel a conspiracy that threatens the entire world.

For his entire adult life, Damien Vendare has lived inside the minds of rich and powerful women, bringing them to untold heights of pleasure and stealing their darkest secrets for the agency that enslaves him. When he finally plots an escape to the distant city of Solace, he is rescued by a mysterious woman named Sariel. She has turned against the oppressive, theocratic Covenant that controls most of the world, and she seeks Damien's help to free her from the angelic spirit tormenting her mind.

But time is not on their side. Even within Solace, remorseless Covenant zealots quickly bear down upon them. Their only hope of survival is a band of revolutionaries fighting to save Demons from slavery and torture. Together they must confront the darkness slowly destroying Sariel's mind and make a final stand against an implacable enemy—all while unraveling the greatest conspiracy their world has ever known.