Trapped and outgunned, Bishop makes a desperate choice: he releases the convicts, Wilson and Wells, to help defend the "Alamo." A strange mutual respect forms between the lawman and the condemned man.

As the sun sets, the "Street Thunder" gang surrounds the building. They are not a typical gang; they are a silent, dehumanized force that moves like a tide. They use silencers to pick off the guards outside and Julie inside, cutting off the precinct from the rest of the world. No one hears the shots, and the lack of working phones means no help is coming. An Unlikely Alliance

The peace is shattered by two converging paths of misfortune. First, a prison transport bus is forced to make an emergency stop when a prisoner falls ill. Among the convicts is Napoleon Wilson, a stone-cold killer on his way to death row. Second, a grieving father named Lawson stumbles into the precinct, catatonic with shock. He has just avenged his young daughter—murdered in cold blood by the "Street Thunder" gang—and now the entire syndicate is hunting him.

In a desolate pocket of Los Angeles, Precinct 9, Division 13 is a ghost of a building. It is slated for closure, its phones disconnected and its staff whittled down to a skeleton crew of three: world-weary secretary Leigh, officer Julie, and Lieutenant Ethan Bishop, a man overseeing the station's final quiet hours.

With their ammunition nearly gone, the survivors retreat to the basement. The gang members break through the final barricades, pouring into the station. In a last-ditch effort, Bishop and Wilson utilize the station's industrial equipment to trigger a defensive blast, neutralizing the remaining attackers in a single, desperate move.

provides the tactical muscle, trading deadpan quips with Leigh between waves of attackers.

See how the film's director, John Carpenter, created a masterclass in tension with limited resources: Neil Marshall on ASSAULT ON PRECINCT 13 Trailers From Hell YouTube• May 3, 2014 The Siege Begins