In a dilapidated Boston warehouse in 1978, two rival criminal crews converge for an arms deal that quickly descends into chaotic violence. When a petty grievance sparks a tense standoff, the carefully planned exchange between IRA members, led by the volatile Frank (played by Sam Riley) and Chris (Cillian Murphy), and a group of gunrunners organized by the smooth-talking Justine (Brie Larson) and the flamboyant Vernon (Sharlto Copley) erupts into a full-blown, crossfire-laced shootout. Directed by Ben Wheatley, this gritty thriller traps its ensemble cast, including Armie Hammer as the suave middleman Ord and Jack Reynor as a hot-headed trigger, inside a single, sprawling set. As bullets fly and alliances shatter, the characters scramble for cover, nursing wounds and plotting survival amidst the debris. What follows is a darkly comedic and relentless 90-minute firefight that peels back the layers of loyalty, greed, and desperation. With no heroes in sight, every character must navigate a brutal, claustrophobic war zone where the only objective is to be the last one standing.