At the prestigious Psycho-Pass Academy, a single club enforces justice across the school grounds: the Public Safety Bureau (PSB). Operating under the banner of the Sibyl System—the teachers' watchful eyes—the club aims to protect the school from vandalism. To achieve this, they employ weapons known as Denominators, which measure an individual's Delinquency Coefficient, indicating the likelihood of becoming delinquent. Akane Tsunemori is a freshman who joins the PSB. There, she encounters two upperclassmen: Nobuchika Ginoza, who takes his duties seriously; and Shinya Kougami, Nobuchika's "dog" and a potential delinquent who eradicates wrongdoers. Aligning herself with this unconventional Disciplinary Committee, Tsunemori begins her absurd high school days, investigating anything that might disrupt the precious peace.