By the year 2112, Japan had managed to create a utopian and idealistic model of society, considered unattainable by ancient philosophers. This achievement was made possible by the replacement of the outdated governmental apparatus with a multifunctional system called "Sibyl", to which people entrusted the responsibility of maintaining order and ensuring safety in society. The introduction of an infallible system with unlimited powers led to a drastic reduction in crime rates almost down to zero. Based on the data from the "psychopassport" – a unique personality characteristic – the system instantly determines an individual's crime coefficient, the likelihood of committing a crime, indicated by a numerical value. If the coefficient exceeds the norm, the system impartially judges them as a potential criminal.
With the arrival of "Sibyl", the level of tranquility among the population normalized. Gradually, people turned into a fearless inert mass, a crowd unable to recognize a crime being committed right in front of them. The system, thought to be flawless, revealed its weakness surprisingly lay in the people it was protecting. It became clear that it is impossible to completely eliminate potential criminals, and cases of violence, though rare, would still occur. Those whose crime coefficient slightly exceeds the norm are sent for compulsory treatment, while those who cross the line irreversibly are sentenced to destruction.
Therefore, a system capable only of judging needs enforcers – those willing to carry out the verdict without fear of tarnishing their own "psychopassport", those who have almost crossed the line. The Bureau of Public Safety, where young investigator Akane Tsunemori joins, employs such people – hounded "hounds" trained to hunt down evil "wolves". In a society where justice is delivered with extreme precision, Akane must navigate the murky waters of morality and ethics, confronting the consequences of a system that claims to protect but can also be ruthless in its pursuit of order. As she delves deeper into the world of enforcing "Sibyl's" judgments, Akane finds herself questioning the very foundation of society's concept of justice and order.