In New Babylon, everything is possible. The souls of the faithful and the sinners are being peddled by the mighty because everyone is searching for his moment to shine in the great city of debauchery and crime. Some are willing to pay anything and do anything to rise to the top, even if it costs them the memory of a loved one, the skill to play poker, or their very soul.  Nathan has fallen on hard times, as a demon with not many deals in his portfolio, and died before he could make his big break. But as he learns that his sister, the innocent Cherubim Furiel, has fallen because of him, he suddenly has to do everything he can to find her and protect her from the city that will swallow a soul as pure as hers whole.  He has to work his way up, again, from the lowest of the low, to get the strength he needs. For her.