In the midst of a rising crime wave, the Tank Police employ unorthodox tactics to combat criminal activity in New Port City. As the mayor pushes for a ban on certain weapons, the Dai Nippon Geiken Corporation, a notorious mobile weapon manufacturer, becomes a target. For Commander, the stakes are personal, as he seeks justice for his murdered partner, linked to Charon Ishira, a former associate of Leona Ozaki. Can his pursuit of revenge come at too high a cost?
