Detective Sergeant Tom Brant is a hot-headed police officer based at a turbulent South East London station. In a brutal early moment, he uses a hurley to subdue three would-be car thieves, setting a tone for a man whose impulses often pull him toward the edge. When Elizabeth Falls asks for help with her Sergeant’s exam, Brant advises patience, noting that she recently left rehab after a self-destructive stretch undercover with the drugs squad. His concern for her is sharply tempered by caution from his superior, a warning that hints at the danger of Brant’s volatile style—an issue a police psychologist later flags as a possible burn-out fault line, recounting earlier incidents of bugging the Superintendent’s office, a billiards hall altercation, and the earlier assault on the three youths.
The thread pulls tight when Brant attends the funeral of Chief Inspector Roberts and, on the same night, PC Sandra Bates is shot by an unseen killer. The station’s mood shifts as Porter Nash is reassigned from West London to act as Inspector in Roberts’s absence. A troubled young boy seeks Falls’s help, convinced he’s killed someone in a gang attack, and she turns to Brant for a favor, steering him toward information about DI Craig Stokes. The shooter—Barry Weiss—reaches out to journalist Harold Dunlop, laying out a chilling challenge: he will kill a certain number of cops, choosing eight, to mark his trail. In the street, Weiss shoots PC Theo Nelson from a car, throwing the station into chaos.
As the investigation dives into Weiss’s footprint, Brant meets informant Radnor, who once boasted about harming a police dog and now points to Weiss as its target. The detectives grapple with Brant’s recurring blackouts, while Nash reveals his own hard-won lessons from past personal violence against a paedophile in his home, a confession that underscores the toll the job takes on anyone chasing justice. The lead lands Brant in a direct line with Weiss, who is recognized as a dangerous figure who once tangled with him in a billiards hall.
Weiss’s crime spree escalates as he kills [Roberts] in a brutal confrontation, pulverizing the chief inspector’s head with a hammer, stealing his police uniform and badge, and burning Roberts’s flat. He calls Dunlop to report the murder and adopts the alias “Blitz.” The police begin to weave a net around Weiss, but Radnor’s growing pressure—seeking a £50,000 payoff in exchange for Weiss’s identity—threatens to unravel the fragile case. Falls’s personal loyalties pull her toward Stokes, who asks her out after she pleads to bury the boy’s name, while Weiss’s shadow looms over the entire precinct.
Dunlop and Brant race to locate the parked car where Radnor describes evidence, but Weiss has already cleaned the scene as the CCTV footage proves unreliable. Falls and Stokes share a drink, all while Weiss watches from a distance, and a rift forms between Falls and Brant as the killer closes in on Falls herself. When Weiss continues his assault on the force, the tension spikes as Falls suffers a relapse, succumbing to drugs while the police scramble to protect her.
Weiss’s release from surveillance leads him back to Roberts’s funeral and, at Roberts’s old domain, to Brant. The stolen uniform and badge become a potent symbol of the killer’s control, and Weiss follows Brant to a parking garage where the evidence from the earlier scene is supposed to be kept. In a tense rooftop confrontation, Weiss aims his pistol at Brant, but the moment twists when Nash appears, and Brant takes the chance to strike. Brant executes a grim, calculated plan: there is no solid evidence tying Weiss to the killings, because Weiss was cleared, and the true target, Brant implies, is anyone in uniform. The final stand ends with Brant shooting Weiss in the head, a moment that seals the killer’s fate in a grim play of perception and power.
With Weiss defeated, Brant and Nash walk away from the rooftop, the danger momentarily contained. The film closes with a stark, unsettling note as Brant unleashes two police dogs on Harold Dunlop, leaving the audience with a chilling reminder that justice in this world can blur the line between order and vengeance, and that in Brant’s city, the hunt for truth can leave a heavy toll on everyone involved.
