A team of capital operatives is investigating a series of brutal murders in a small Siberian city. All the victims worked at a local mining and processing plant, dealt with precious metals and died... on a full moon. The head of the investigation team, Lieutenant Colonel Tatyana Znamenova, did not believe in mysticism. But only until she met the “gray eminence” of the city, Viktor Chashchin. And it’s not clear what fascinated the stern woman more—the unexpected gallantry of her new acquaintance or his hypnotizing gaze. Carried away by her feelings, she did not notice how, together with her subordinates, she became the target of the bloodthirsty owner of these places, on whose conscience there were dozens of innocent victims...