Terrible things are happening in the sleeping car of a fast train... Why does an officer of the FSB anti-drug department diligently pretend to be a tough “brother”? Where did one of the brother-athletes who were traveling in one of the compartments mysteriously disappear? What secret do the big boss and his secretary keep, who have no contact with anyone? Grunya and her friends understand that all this is not without reason. Most likely, a real criminal is riding in their carriage...