Just one mistake could mean death... In 1942 Richard, cabaret singer by night, spy by day, risks his life to help British servicemen escape occupied France and get back to England. Rose leads a group of high-spirited dancers travelling bombed-out Britain entertaining factory workers, as Hitler's bombers roar in the skies above. Then, she is given orders to join the forces in the field, destination unknown. Meanwhile a phantom pianist, who has lost the love of his life, is following Monty's soldiers across the African desert, mocking the enemy's guns by playing Beethoven between the lines.