1941. Almost all of Europe is under the Nazi heel. Great Britain still holds out, but the situation worsens with every passing day. And in North Africa, gateway to the Middle East and its immense oil reserves, Rommel now threatens Egypt, keystone of British defences. In those desperate times, three unconventional officers, David Stirling, Blair Mayne and Jock Lewes, band together to create a small, elite unit that will become a military legend: the SAS.