Writer-director Christopher Nolan presents this elaborately filmed drama about the decisive WWII battle in which Allied soldiers, surrounded by Nazis, held off the enemy while being evacuated by sea, in a daring and unorthodox plan. The same true story provided the pivotal climax for another 2017 WWII drama, Darkest Hour, starring Gary Oldman as Winston Churchill. So if you saw that movie, or know your history, consider this an after-the-fact Spoiler Alert.