Through a Mental Trace, Arata discovers that the supposedly-dead Kurisu is alive and uncovers the truth behind the terrorist bombings. Shimotsuki, meanwhile, has launched a forced search of Heaven’s Leap and brought Unit Two to locate Kei. Torri, cornered, takes Maiko hostage and confronts Kei, but Maiko takes advantage of a momentary opening to end his life.
Freelance journalist Yayoi Kunizuka joins Unit One as an investigation consultant to fill the gap left by Kei’s suspension. As the investigation progresses, Unit One uncovers Karina Komiya’s greatest secret. Guessing that Karina will be the next to be attacked, they rush to her gubernatorial debate at the Giga Arena.
After meeting Karina Komiya face-to-face, Arata senses something unfathomable from her, but can’t find a clue to the case. Then Lee Aki, the secretary of her opponent, Kosuke "Heracles" Yakushiji, is murdered. Unit One decides to split up to investigate both the attackers and their victims, but…
Psycho-Pass is set in a futuristic era in Japan where the Sibyl System, a powerful network of psychometric scanners, actively measures the biometrics of its citizens' minds. The resulting assessment is called a Psycho-Pass. When the calculated likelihood of an individual committing a crime, measured by the Crime Coefficient index, exceeds an accepted threshold, he or she is pursued, apprehended, and either arrested or decomposed by the field officers of the Crime Investigation Department of the Public Safety Bureau.