The private detective agency, which was opened by Ailia Noir, a dropout student at the Higher Academy of Magic, did not have much luck with clients at first. You can’t call searching for missing dogs a profitable and serious business. And suddenly... However, all the most mysterious things begin suddenly. So, Ralph Purrier, a student, the son of wealthy parents, whose main concern was to penetrate the upper echelons of society, suddenly disappears. Concerned mom and dad entrust Detective Aylia with searching for their missing son. That's when things started to get weird. Either a young detective almost becomes a victim of a collapse in an old quarry, or some other misfortune happens. And if it weren’t for her faithful assistants - the dragon Zenedin, the pet ocelot Farka and Monsieur Henry, the ghost of the former owner of the house where the heroine lives - she would never have seen the fee for the solved crime.