Escape from Dunkirk

S1 E6: May 1940 - 400,000 Allied troops are surrounded by Hitler’s marauding army on the beaches of Dunkirk. Deep in the tunnels under Dover Castle, the Royal Navy plans a rescue mission. As the troops are targeted by Luftwaffe fighter planes and with the Nazi noose tightening, can the Allied soldiers escape to Britain to continue the fight? Success or failure could decide the outcome of the war.