A heavy-assault multi-ped tank runs amok, under the control of an unknown hijacker using the "recognition code" of the tank's designer, Takeshi Kago, who died a week earlier. After going on a destructive spree at the testing facility, the tank heads towards the urban area of Niihama. Section 9 is called in to stop the tank, as no terrorist group has claimed responsibility, and the JSDF refuses to involve itself unless terrorism is the clear motive.
