Like a bolt from the blue, a man died from an electric shock in Limansk. It would seem that it was just an accident: a man brought an extra wire to his house, and he took it and short-circuited it. But the case turns out to be not so random, and the deceased turns out to be the ex-husband of Marina Orlinskaya. And as soon as this case can be solved, another death occurs: a passport officer from the Limansk police department dies in the basement of her house, poisoned by new wine. It seems that danger is moving around Marina in circles, like a shark, and the circles are getting narrower, and the elusive mafia is getting closer and more real.