After a deadly battle in Mega City One's General Hospital, Judge Dredd and the special extermination unit, the Verminators, bury their dead and reorganize to fight a possible city-wide infestation of the bloodthirsty, acid-filled Aliens. An anti-judicial terrorist group exists unnoticed in the ruined Undercity, plotting to breach the city's defenses to let loose Alien terror upon the Judges and innocent civilians. With the Verminators and Judge Dredd's assault squads already ravaged by an Alien attack, will the addition of the Mechanismo Droids, old robotic Judges, be enough to protect Mega City One from the fiercest killing machines in the galaxy?