[4] The film depicts six days from the life of ninth-grader Kolya Smirnov (Semyon Treskunov).

Someone sets fire to the school's additional building which contained the new computers, the principal's daughter, high school student Ksyusha (Anastasia Bogatyryova), in turn falls in love with Kolya and is under the impression that Kolya was the one who set the school on fire.

Kolya's father Alexander (Konstantin Khabensky) makes the family transition to the 12/36 system – this means twelve hours for sleep and thirty-six hours for staying awake, which does not allow the protagonist to sleep or even to collect thoughts.

Semyon Treskunov auditioned for the film The Good Boy for the first time when he was 11, and this was the third casting in his life.

Because of problems with financing, the launching of the preparatory period was repeatedly postponed and by the time investors appeared Treskunov had grown to the age required by the scenario.