Walter steals the briefing tape that Dredd believes brainwashed the other Judges. Walter is captured by Judge Slocum, though, and all seems lost. However, in another fit of madness, the Chief Judge pickles Slocum (really!) before he can reveal Walter's treachery.
Dredd confirms his suspicions on how the other Judges were brainwashed, but time is running out! The Chief Judge, wishing to preserve his "perfect" city, reveals that nerve gas will be released into the city, killing everybody.
Dredd frees the other Judges from the tyrant's control and they assault Hall of Justice. But, the Chief Judge seals himself in the Statue of Justice. Can Dredd reach him before nerve gas is released and Mega City 1 dies?
A mad scientist creates a monstrous "DNA-Man" named Dennis. The creature murders the scientist's remorseful assistant, and both scientist and monster go into hiding. The scientist's name: Milton D. Frankenstein.