In May 1940, the fate of World War II hangs on Winston Churchill, who must decide whether to negotiate with Adolf Hitler or fight on knowing that it could mean the end of the British Empire.

Gary Oldmanas Winston Churchill
Stephen Dillaneas Viscount Halifax
Lily Jamesas Elizabeth Layton
Ronald Pickupas Neville Chamberlain
Ben Mendelsohnas King George VI
Kristin Scott Thomasas Clemmie
Nicholas Jonesas Sir John Simon
Samuel Westas Sir Anthony Eden
David Schofieldas Clement Atlee
Richard Lumsdenas General Ismay
Bruno Delbonnel