This is a little-known but far-reaching story on the eve of the establishment of Ghost in the Shell. On June 6, 2027, Lieutenant Colonel Mamuro (voiced by Atsushi Miyauchi), who was affiliated with the Army's secret unit 501, was killed on a busy street. He had previously been involved in a bribery scandal involving arms sales and could not get out of it. There are naturally countless mysteries behind his death. On a rainy night, the head of Public Security Section 9, Daisuke Aramaki (voiced by Kazuhisa Suku), who was trying to retrieve Mamuro's electronic brain, met the cyborg Motoko Kusanagi (voiced by Maaya Sakamoto) for the first time at Lieutenant Colonel Mamuro's grave. At this time, Kusanagi was just a soldier in the 501 agency responsible for tracking down cybercrimes. This trip she hoped to find the truth behind the injustice and murder of the highly respected lieutenant colonel. Unexpectedly, the lieutenant colonel in the coffin had long disappeared. After that, she was commissioned by Aramaki to conduct an investigation, and during a series of dangerous investigations, she met former special forces member Bart (voiced by Kenichiro Matsuda) and Tokusa (voiced by Tarushuke Aragaki), who was then a detective in Shinhama Prefecture. The confusing case led Kusanagi and his party to an unknown place... This film is adapted from the original work by Masamune Shirow.