A high-ranking official is killed on a train by an assassin calling himself State Counsellor Erast Fandorin. Of course, the killer is not the real Fandorin (Menshikov) -- who is summoned to solve the murder -- but an anarchist named Green (Konstantin Khabensky), who is in contact with a double agent working within the state department.
Fandorin's task is to hunt down Green and his cronies and sniff out the rat. Fandorin investigates a selection of suspects, at one point disseminating misinformation to see who's the leak. Jocular but ruthlessly ambitious top cop Pozharsky (Mikhalkov) helps out.
Meanwhile, Green starts to suspect his informant, whom he's never met, may have an agenda not entirely congruent with the aims of the proletariat. And, Green's joining forces with another terrorist, Kozir (Vladimir Mashkov), produces friction when Kozir's prostitute g.f. Juli (Maria Mironova) proves fickle with her favors.
Source : www.variety.com