According to the plans of the criminals, a whole series of terrorist attacks with huge human casualties should plunge the country into terrible panic. By chance, FSB captain Dmitry Korsakov witnessed a terrorist attack committed by a female suicide bomber. The management instructed him to find the leaders of the terrorists. This is not so easy to do, because bandits - people from the same diaspora and a stranger - figure out on the spot. But Korsakov got his hands on a thread that could lead him to the very lair of a terrorist organization...