The films was inspired by true events. Przemyslaw Saleta, World's Kickboxing Champion and European Champion in professional boxing gave a kidney to his seriously ill daughter. There were unexpected complications during the surgery and Saleta almost died. The movie starts when Saleta learns about the birth of his daughter Nicole and ends several years later when Saleta decided to give Nicole his own kidney. The story does not follow one linear, chronological path. The audience watches the boxer in the surgery room and join the protagonist in the recollection of past events;
Unfortunately the movie Bokser is not yet available on HBO Max.
| Writing | Michał Godzic | Writer |
| Directing | Tomasz Blachnicki | Director |
| Writing | Jarosław Banaszek | Writer |
| Costume & Make-Up | Agata Culak | Costume Design |
| Editing | Krzysztof Boroń | Editor |
| Art | Marek Zawierucha | Production Design |
| Camera | Marek Gajczak | Director of Photography |
| Production | Krystyna Lasoń | Producer |
| Sound | Paweł Lucewicz | Music Arranger |
| Sound | Paweł Lucewicz | Music Producer |
| Sound | Paweł Lucewicz | Original Music Composer |
| Sound | Paweł Lucewicz | Musician |
| Crew | Tomasz Krzemieniecki | Stunt Coordinator |
| Crew | Tomasz Krzemieniecki | Stunts |
| Crew | Tomasz Krzemieniecki | Fight Choreographer |
| Sound | Małgorzata Jamroży | Vocals |
| Production | Dariusz Gąsiorowski | Supervising Producer |
