It tells the incredible true story of the Polish "James Bond" the legendary courier from Warsaw, a spy whose lonely mission could decide the fate of Poland and World War II. Based on a true story, this action-thriller follows real-life Polish war hero Jan Nowak-JezioraÔnski, a man of extraordinary courage, who served as an emissary between the commanders of Poland's resistance movement and the Polish government in exile in London at the height of the Second World War.