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;

Robert is a reserved symphony orchestra musician raising his ten-year-old son alone. His orderly life is disrupted when vibrant fitness star Marta bursts into his summer routine. As their contrasting personalities and views on love collide, they discover affection in the unlikeliest of circumstances.