Dunkirk is a 2017 war film written, directed, and produced by Christopher Nolan. The film is based on the Dunkirk evacuation, a real event that took place during World War II. Here's a brief summary:
The British government, led by Prime Minister Winston Churchill, decides to launch a massive evacuation operation to rescue the stranded soldiers. The operation, code-named "Operation Dynamo," involves a fleet of ships, boats, and other vessels that will sail across the English Channel to Dunkirk to pick up the soldiers.
The story follows a group of soldiers, including Commander Bolton (Tom Hardy), a British naval officer who leads the evacuation efforts; Alex (Harry Styles), a British soldier who becomes one of the key characters; and Farrier (Mark Rylance), a veteran British pilot who provides air support to the evacuation operation.