The setup is that Emily Blunt is a star FBI agent who joins the elite government team at the behest of an official (Josh Brolin), with the goal of taking down a powerful drug cartel in Mexico. They're heading across the border when a weapon is spotted in the hands of a cartel member, leading to a stand-off that looks like a powderkeg about to explode.
Denis Villeneuve directed; Roger Deakins photographed. The movie opens in select theaters in North America on September 18 before going wide on October 2.