Ghost in the Shell (GITS) is definitely for adults -- no question about it. This is due not only to the themes and imagery, but in regards to the complexity of some of the episodes. Many of the GITS episodes could easily be placed in a new anime sub-genre that might be called political anime.
In a futuristic world where the internet and cybernetics has blurred the borders between societies; the members of Public Security Section 9 are reinstated to assist in solving numerous cases of cyber crime. A spate of similar crimes committed by separate suicidal groups known as "The Individual Eleven" becomes the core focus for Section 9 as war approaches in the form of refugees flooding into the country.
In the future, life between the digital and physical world has been blurred. The boundary of technology and humanity has been stretched beyond imagination with lives being led in both the electronic and physical worlds. With the melding of man and machine, a new cybernetic level of existence is being created - An existence that continues to redefine mankind.
Ghost in the Shell is a futuristic police thriller dealing with the exploits of Major (Motoko) Kusanagi, a member and group leader of a covert operations division of the Japanese National Public Safety Commission known as Section 9. The unit specializes in fighting technology-related crimes.
Although supposedly equal to all other members, Kusanagi fills the leadership role in the team, and is usually referred to as "Major" due to her past rank in the Japanese Self-Defense Forces. She is capable of superhuman feats, and bionically enhanced for her job. Majorís body is almost completely mechanized; only her brain and a segment of her spinal cord remain organic.