In a small and peaceful village in the Soviet Union, a young boy named Serёzha navigates the turbulent waters of adolescence. Trapped in the routine of his school life, he faces the expectations of his family and the pressure from his peers. As the school year progresses, a series of unexpected events lead him to question his place in the world and his true purpose.
The story begins with Serёzha as a kind and dreamy child, but as he enters adolescence, he starts to experience the complexity of human relationships. The pressure to stand out in school and be accepted by his friends pushes him to make decisions that are not always the right ones. In a turn of events, he finds an unexpected mentor in a math teacher, who teaches him the value of effort and honesty.
However, being a teenager is not easy, and the temptations of adult life get in his way. The family dynamic also plays a crucial role, as his parents have high hopes for him, adding even more pressure. In an exciting climax, Serёzha must decide what kind of person he wants to be and how to face the challenges of life. Amid laughter, tears, and life lessons, he embarks on a journey of self-discovery that will resonate with anyone who has ever been young.