Getting ready to spend a vacation in Paris in the company of Alexandra, Ksyusha and Remy, private detective Alexey Kisanov simultaneously takes on a simple case of finding a missing person. As it turned out, Mikhail Levikov went to France to visit a woman he met on the Internet. However, he disappeared again - this time from Paris! Moreover, Ksyusha also mysteriously disappears after playing her role in an erotic performance in the castle of the Marquis de Sade. She was last seen with a certain lawyer, who claims that he delivered Ksyusha to the station. Nevertheless, she did not buy a train ticket... The traces of both “disappearances” were strangely lost in the mysterious mountains of Provence. Each step poses a new puzzle for Alexey and Remy, any version leads to a dead end, while their investigation is framed by a series of brutal murders...