It describes a disagreement over how to properly subjucate an newly retaken world during the [[Great Crusade]] between [[Rogal Dorn]] and [[Konrad Curze]]. It also tells of Kurze's escape from the [[Imperial Palace]] after he had been brought to Terra to answer for his violent but effective methods. It takes place shortly before the [[Horus Heresy]] and is in the book series of the same name.