A little known episode from the life of Stalinist security police office Julia Brystiger. Her nickname Bloody Luna was a reference to her incredibly brutal methods of interrogation. In the early 1960s, she appears in a centre for the blind on the outskirts of Warsaw, a place often visited by Cardinal Wyszyński, whose imprisonment in 1953-1956 Brystiger supervised personally. During a difficult and heated discussion with the cardinal, Brystiger denounces the communist ideology and begs for forgiveness for her crimes and for guidance in her search for God.
A young factory worker takes up on boxing as a way to find himself and advance his chances for the future. But the difficulties of sorting himself out in the crooked boxing environment hold him back in the beginning, until he arrives for tournament in Chicago, where he can prove himself. In the end, he wins over his Yank opponent, an amateur below his ranking, and is back in the factory.