In the future, when technological transformation and robotics have become part of daily life, the Public Security Ninth Class and its elite member Major Motoko Kusanagi took on tasks that ordinary police could not cope with.Lesson 9 brings together hackers, sharpshooters, detectives and biochemical people, each with unique skills to fight against the evil forces hidden in the fog of digital and protect the safety of innocent people.They are not only the enforcers of the law, but also the last watcher between order and human nature.