During the flight, the hero of the film, the boxing champion, recalls his life's journey. The hero’s childhood was in the first post-war years. He grew up without a father, his mother was busy with work, his older brother was in prison, the relationship with the new stepfather did not work out, and the boy was brought up on the street. There he learned to fight, and this led him to the boxing ring. Over time, the stubborn street boy became the champion of Europe.