Set in June 1944 at a time when one man's decision is about to change the course of history. An intense real-life thriller centred around the most important weather forecast in the history of warfare. Scottish meteorologist, Group Captain James Stagg, advises General Eisenhower on when to give the order to send thousands of waiting troops across the Channel in Operation Overlord. The future of Britain, Europe and our relationships with the United States is at stake as well as the lives of millions. Pressure is the extraordinary and little known story of one man who changed the course of war, and our lives, forever.