It is said the fluttering of a butterfly's wings in the Amazon forest will have an adverse effect, and cause a typhoon to form on the other side of the globe. The Iron Butterfly expounds this theory in the theatre of the Second World War... Lorient, France, 1944 - Captains Franz Bauer and Kurt Oblitz are on a secret mission to sail their U-boats to the Far East with a highly dangerous cargo. Germany would share their latest technology with Japan to create a unique weapon - the Uranium Bomb. Bauer faces emotional challenges, desperate for information on the whereabouts and well-being of his...