The years have passed since the Scorpio killer, a band of renegade cops, and a terrorist group were all up against one tough Inspector "Dirty" Harry Callahan (Clint Eastwood), a new killer has now emerged and might prove to be Callahan's most dangerous enemy yet. From San Francisco to San Paulo, forty-something rape victim Jennifer Spencer (Sondra Locke) has turned into a cold-blooded vigilante killer and is out gunning down her attackers one by one. But right behind the bloody trail, is an aging, but still bitter Inspector "Dirty" Harry Callahan, who's not only a target of a crime syndicate for which he was sent away, but ends up being entangled between the killer's vengeful vendetta and irresistible lust.