From the back cover: "The Bon Festival is a night of celebration and reflection, but this year, danger stalks the City of Lies. An inhuman creature leaves murder and destruction in its wake. A mysterious sword is stolen. A shipment of festival goods goes horribly awry, and a sinister cult plots to plunge the city into eternal darkness. Can the Emerald Empire's protectors unravel this web of mysteries and avert danger, or will Ryoko Owari echo with the sound of a thousand screams?"