In the seventy-two hours leading up to D-Day, all the pieces are in place except for one key element: the British weather. Britain's chief meteorological officer James Stagg is called upon to deliver the most consequential forecast in history, locking him into a tense standoff with the entire Allied leadership. With only hours to go, the fate of the war and the lives of millions hang in the balance.

• Working Title Films
• StudioCanal
• Andrew Scott
• Brendan Fraser
• Kerry Condon
• Chris Messina
• Damian Lewis