This is the story of gray-haired Nikolai Borisovich, a teacher and mentor, who one day gives up his career and gets a job as an ordinary courier in a multi-profile company. From the very beginning of the film, we see a determined old man who fulfills orders and step by step climbs the career ladder. Nikolai Borisovich always has an old Polaroid camera around his neck, and he records each new success and sends the photo somewhere in an envelope... Overcoming obstacles, Nikolai Borisovich, a true teacher by vocation, will prove that in one summer you can build a happy life. The main thing is to do it honestly. Just live.

Stas, a former mixed martial artist, returns home to find his lonely mother, who is angry at her son. In an attempt to somehow get closer and help his mother, Stas begins to compose a fairy tale based on the words of a random foreigner from a chat roulette. These words begin to miraculously come true, creating a space where the past and the present intertwine.

The war burst into the peaceful life of three friends suddenly, forever changing their destinies. Each of them went to the front, leaving the most valuable things at home in order to fight for this most valuable thing. Surprisingly, they are helped to survive in this fiery hell of battles with fascism, music. Taking musical instruments with them, friends play to maintain the morale of fellow soldiers, as well as to compose the leitmotif of Victory so desired by all.