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.

Mariana is a successful lawyer whose life is subordinated to work and strict order. Her marriage to Dmitry is more like a coexistence than a living connection, and suspicion of infidelity becomes only a point at which it becomes impossible to ignore the accumulated emptiness. The situation worsens with the arrival of her eccentric mother, actress Margarita, who decides to "save" her daughter in very unusual ways.

The boy Igor receives a dog as a gift for his birthday and runs away from home with it. But now the two of them must save Igor's father, an astronaut, from death.