Werewolves and vampires established a fragile truce after a centuries-long bloody feud. But interspecies hatred did not even think to fade. Law enforcement agencies from both sides continued to work very badly - they covered their own, and fabricated cases against strangers. People were tired of staying away and catching stray bullets, so they took the initiative to organize on the common lands of Salarun the first ever mixed department for the investigation of interspecific crimes, consisting of twelve employees: four from each species. And by a fateful coincidence, both internationally well-known professionals and completely inexperienced but influential youths mixed in a rattling mixture in one workspace: daring twins from the ruling pack and arrogant counts from the oldest vampire clan. It seemed that it could not be worse, but then they read out a list of partners...