Psycho Pass is set in the near future, when it is possible to instantaneously measure and quantify a person's state of mind and personality. This information is recorded and processed, and the term "Psycho-Pass" in the anime's title refers to a standard used to measure an individual's being. The story centers around the enforcement officer Shinya Kōgami, who is tasked with managing crime in such a world.
The series takes place in a dystopian Japan where citizens are constantly monitored by a system called Psycho-Pass that measures their mental state for signs of criminal intent. Those who display high levels of stress or negative emotions are classified as potential criminals and targeted for apprehension by special police forces known as Enforcers. The main protagonist of the series is Shinya Kogami, an Enforcer whose job it is to hunt down these potential criminals while trying to keep his own Psycho-Pass from becoming too clouded with anger or frustration. Along with his partner Akane Tsunemori, Kogami must balance justice with mercy as he attempts to protect society from itself.