The characters of the play do not know that tomorrow there will be a war, that many people have only a few days left to live. They enthusiastically fight with the teacher, fall in love, cry and laugh, have fun, fight, mischief and impudence, but they seem to be just children, although - the paradox of that time! - their souls mature and develop much faster than their bodies. And when their friend's father is arrested by slander or mistake, they are ready for the first trials, for the initial lessons of injustice and grief, mutual assistance and mutual understanding. The tragedy that happened in the classroom was a kind of test of readiness for tomorrow's sacrifices and tomorrow's exploits..