In the technologically advanced Niihama City of 2029, cybernetic enhancements have reshaped society, allowing citizens to exchange their human limbs for robotic substitutes. Public Security Section 9, tasked with preserving order in this interconnected world, faces threats like corruption and terrorism. Leading the charge is the resolute Major Motoko Kusanagi, who delves into a perplexing case tied to the elusive hacker known as the 'Puppet Master.' This enigmatic figure, with a body mostly mechanized, disrupts lives by erasing memories, showcasing immense prowess. As Motoko and her team pursue this master hacker, entangled factions like Section 6 complicate matters, leading to a profound exploration of ethics and the self. Amidst philosophical musings on existence, Motoko realizes that the answers she seeks lie with the Puppet Master, blurring the lines between adversary and mentor.