Following an online leak, Warner Bros. has released a minute-long teaser for Christopher Nolan's "Dunkirk." The trailer debuts in theaters this weekend with "Suicide Squad."

Centering on the 1940 Allied evacuation of Dunkirk, France, the film stars Tom Hardy, Kenneth Branagh, Mark Rylance, Cillian Murphy, James D'Arcy and, yes, Harry Styles. The tense, bleak footage depicts a desolate beach before shifting to soldiers on a troop transport who, one by one,  begin to react to the sound of an incoming plane.

Nolan's first feature since 2014's "Interstellar," "Dunkirk" opens July 21, 2017.