Anna is happy - she marries a handsome knight who saved her from death. This is investigator Kornilov, courageous, kind, charming, passionate about the East and esotericism. Their honeymoon is like a daydream. But upon their return, Anna and her knight are faced with a cruel reality: a witness at a wedding is found murdered under mysterious circumstances. The wounds on her body make one doubt that the crime was the work of human hands. And this is not the first and not the last victim of the mysterious villain! Anna's husband and his partner, nicknamed Sancho, are trying to find the maniac. Who is the killer, man or beast? Wolves in sheep's clothing prowl in the darkness of the night. Love for her husband and guilt - after all, Anna herself could have been in the place of the murdered woman - push her to investigate on her own...