Former FSB officer Grigory Kashcheev, arrested for murder, makes a daring escape. Before seizing a large sum of money and fleeing abroad with it, he hatches a plan of revenge against Mona, the informant who contributed to his capture. FSB Colonel Viktor Loginov understands well the danger looming over Monya. He decides not only to save his colleague, but also to use him to catch an insidious werewolf in uniform . Kashcheev showed devilish ingenuity and easily bypassed the traps set by Loginov. To cover up the traces of the assassination attempt on Monya, the werewolf intends to blow up a nightclub with all its visitors...