Kir Lopukhov and Alyosha Mamykin are classmates who have just received a certificate of maturity. The war began and the guys, without hesitation, also act together in the same artillery special school. They are given just three days to visit the front, for which there is so much to be done! Say goodbye to your Sokolniki. Find classmates. And Kira - by all means learn about the fate of her beloved girl Olya. True, she was evacuated, but according to rumors, she returned to the capital to go to university.