Paraula clau Public Security

En un Japó futurista, la jove Motoko Kusanagi, també coneguda com a 'the Major' Mira Killian, és la líder de grup operatiu d'elit, Secció 9, que té com a objectiu lluitar contra el ciberterrorisme i els crims tecnològics. Al comandament d'aquesta unitat d'operacions encobertes hi ha Aramaki i destaca Batou, un exmilitar considerat com un dels agents més salvatges del grup. Però, després d'una perillosa missió, el cos de Kusanagi queda malmès, i se sotmet a una operació quirúrgica per trasplantar el cervell en un cos robòtic. Aquest nou cos artificial us permetrà ser capaç de realitzar gestes sobrehumanes especialment requerides per al seu treball.

Inami and Tamaru work at the Public Security Mobile Investigation Unit Special Investigation Team, a team made up of specialists with different expertise. Inami tackles criminals with showy maneuvers, while Tamaru corners criminals with cool calculation. Together, the team tackles terrorists, new religious cults, military spies, secret narcotics organisations and complicit politicians.

In the future when technological enhancements and robotics are a way of life, Major Motoko Kusanagi and Section 9 take care of the jobs that are too difficult for the police. Section 9 employs hackers, sharpshooters, detectives and cyborgs all in an effort to thwart cyber criminals and their plans to attack the innocent.

An explosion take place in a street of Tokyo. Many people were killed or seriously injured. One casualty is Chihiro, the wife of Public Security chief inspector Kuraki Naotake. While trying to find why his wife was being implicated in the explosion case, Kuraki comes into contact with Public Security sergeant Akeboshi Miki and Metropolitan Police Department inspector Osugi Ryota who are also investigating this case.

Takano has been transferred to the Public Security Department, which is considered to be an elite among the Japanese police. A murder of a ruling party tycoon occurred near the scene of a bombing that occurred. An organ was removed from the body, and a balance with a heart and wings was left in the vicinity. Takano, who attended the scene of the bizarre incident, felt uncomfortable with the killing method that imitated ancient Egyptian mythology, and even though he began to tell the story, his colleague Himuro dismissed it.