In 2029, information networks are spread across the globe like stars, and this is a futuristic world close to us. In one country in Asia, cyber communications have made rapid progress, human human creation technology has been continuously innovated, and computer crime has begun to become highly advanced and complex. The political special appointment of Arama as minister, the formation of a secret special force headed by Kusanagi Susa Shōsa "Public Security 9 Lessons", also known as the "Shell Attack Mobile Team". They specialize in dealing with crimes that cannot be acted on publicly, and they often deal with things in secret through some special way.