Based on the story "Cossacks" by L. N. Tolstoy. The nobleman Dmitry Olenin, who by the age of twenty-four had squandered half of his fortune, had not completed a course anywhere and had not served anywhere, understands that it is impossible to live like this anymore, not knowing what to direct the strength of youth to - he enters an infantry regiment in the Caucasus as a cadet, hoping to change his life.