Summer of 1942. A fierce battle begins near Stalingrad, the outcome of which will decide the fate of the whole world... Twenty-year-old sergeant Lubomir Zukh, who has not yet smelled gunpowder, left his unit in the frontline zone to say goodbye to his girlfriend.​ He was out of the unit for only three hours!​ But according to the laws of wartime, he is a deserter. And the punishment for this is one thing — execution.​ ​The sentence is too harsh, and everyone understands that. Will the flywheel of the military machine stop, will there be an order for pardon?

Our three hapless heroes - Igor, Artyom, and Sauna - return for the third lesson from St. Valentine. This time they must learn the true value of fatherhood, but this time the kids are grown up...

An Orthodox priest, a resident of a provincial town, has for many years been unable to find answers to important questions for him, tormenting and interfering with a peaceful life. Once, having unraveled the tangle of certain events, he realizes that the answer lies in a long and difficult unforgiveness.

The three not-so-lucky guys are having the most difficult, weirdest and funniest day of their lives. Meanwhile, in Moscow, a gang of Kyrgyz conspirators begins to wield, a sexist gynecologist and a feminist traumatologist come to work, a film producer is cheating on the Motherland, and clay policemen are uncovering their batons. The only question is which of these meetings will become fatal for our friends.