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In present day St. Petersburg, police major Igor Grom, an honest and skilled cop with unconventional methods, pursues a vigilante murderer in the mask of a plague doctor.
When the police finally catch an elusive serial killer, no one can prove his guilt, resulting in the lead detective making it personal.
An aircraft designer becomes a ghost after a sudden death. Now he needs to engage a help of seven-grader in order to finish all his unaccomplished tasks.