WATCH: ‘Dunkirk’ Teaser Trailer Leaked    

Louis Tomlinson Is Working with Simon Cowell to Launch a New Girl Band
Louis Tomlinson is launching a girl band with the help of Simon Cowell.

Sadly, Harry Styles isn’t in it.

Just one day before it was supposed to debut with Suicide Squad on Friday, the first teaser trailer for Christopher Nolan’s WWII film Dunkirk was leaked. This prompted Warner Bros. to release the actual clip online earlier than planned.

The brief but evocative first images are paired with the sounds of a ticking clock. War-weary soldiers are shown wandering beaches or in rows behind battlements. The final image is a seeming endless column of British soldiers aboard a boat preparing to be bombarded by planes high above.

The film stars Tom Hardy, Kenneth Branagh, James D’Arcy, Mark Rylance and, of course, the One Direction singer. The project is based on the rescue of hundreds of thousands of British soldiers from the titular French town in 1940.

Dunkirk arrives July 21, 2017.