The future is hell. The world’s population has decreased to 800 million and it is mostly a wasteland. Mega City One spans from Boston to Washington D.C. and it is a chaotic, lawless place where crime, poverty, rioting and unemployment are persistent. Only the Palace of Justice and the Judges bring any form of law and order and the best of them is Judge Dredd (Karl Urban). Dredd is assigned to assess a rookie Judge, Anderson (Olivia Thirlby), who has failed the exams but has psychic abilities.The two have a hell of a first day when both Judges are trapped in the Peach Trees tower block by an intelligent and sadistic crime lord, Ma-Ma (Lena Headey), who controls the distribution of a new drug called Slo-Mo and wants them dead.