Clayton's life is stuck in the mud. His wife has been cheating on him for years, his literary career is uninspired, and his job as an editor is mediocre at best. But when he walks into a restaurant and finds a mysterious dark-haired stranger waiting for him, his life dramatically changes. The stranger claims to be Lucian, one of Lucifer's fellow fallen angels, come to tell Clay his story of the angels' dramatic fall from Heaven, Adam and Eve's Eden, and Christ's triumph on the cross - from a demon's perspective. This seems just the thing to get Clay's career jumpstarted, but it could mean his ultimate success or failure as Lucian's story seems to become more and more like his own.