What can you say about Belimai Sykes? A descendant of ancient demons, the Prodigal is a creature woven from dark temptations and possessing extraordinary powers, having suffered inhuman torture in the past and suffering from addiction. And yet, it is to Belimai Sykes that Captain William Harper decides to turn for help, faced with a series of brutal murders that inspire superstitious horror. Only Mr. Sykes doesn't work for free, and lost reputation is far from the full price Captain Harper will pay for his decision to investigate with Belimai. You have to fight for the ideals of justice and your life both in the luxurious mansions of aristocrats, under the gilded roofs of which criminals involved in vivisection and witchcraft hide, and in the slums of the Underworld, saturated with fumes. Anyone can be an enemy, but Captain Harper is confident in the loyalty of the demon, with whom he has made a fairly close acquaintance.