In Auschwitz, every day is a fight for survival. Alma is inmate 50381, the number tattooed on her skin in pale blue ink. She is cooped up with thousands of others, torn from loved ones, trapped in a maze of barbed wire. Every day people disappear, never to be seen again.

This tragic reality couldn't be further from Alma's previous life. An esteemed violinist, her performances left her audiences spellbound. But when the Nazis descend on Europe, none of that can save her...

When the head of the women's camp appoints Alma as the conductor of the orchestra, performing for prisoners trudging to work as well as the highest-ranking Nazis, Alma refuses: "they can kill me but they won't make me play". Yet she soon realizes the power this position offers: she can provide starving girls with extra rations and save many from the clutches of death.

This is how Alma meets Miklos, a talented pianist. Surrounded by despair, they find happiness in joint rehearsals, secret notes, and concerts they give side by side--all the while praying that this will one day end. But in Auschwitz, the very air is tainted with loss, and tragedy is the only certainty... In such a hopeless place, can their love survive?