In a virtuoso solo performance, Academy Award-nominee David Strathairn (Good Night, and Good Luck, Lincoln, Nomadland) portrays Jan Karski in this genre-defying true story of a reluctant World War II hero and Holocaust witness. After surviving the devastation of the Blitzkrieg, Karski swears allegiance to the Polish Underground and risks his life to carry the first eyewitness reports of war-torn Poland to the Western world, and ultimately, the Oval Office. Escaping a Gestapo prison, bearing witness to the despair of the Warsaw ghetto and confronted by the inhumanity of a death camp, Karski endures unspeakable mental anguish and physical torture to stand tall in the halls of power and speak the truth. Strathairn captures the complexity and legacy of this self-described "insignificant, little man" whose timely story of moral courage and individual responsibility can still shake the conscience of the world.