Britain's MI6 is caught off guard when war breaks out. As the Germans advance across Western Europe MI6's networks collapse, and Britain becomes almost blind. MI6 have their secret weapons at Bletchley Park but they now face a painful struggle to rebuild their eyes in Europe.

We've seen it time and time again in this war. Supposed Allies arguing with each other instead of fighting the enemy. But when SOE and MI6 begin vying for leadership of Britain's secret war, it's more than cross words. Now there are lives at stake.