You wake up mid-apocalypse with no memory and a sword that cuts through anything, and the only person who can match you is someone just as broken, just as convinced he's right. The OVA doesn't waste time on exposition or morality, two walking weapons collide because the world is already dead. Krauser thinks he's saving humanity; Geist knows better, or knows worse, or doesn't care which one is true anymore.

After Geist sets the Death Force machines loose across the planet Jerra, the robots spread out to kill every living thing that remains. Geist now occupies himself with tearing the machines down one at a time, while the surviving people decide they have had enough. A new threat rises in Krauser, another M.D.S., or Most Dangerous Soldier, who has cast himself as mankind's only savior. Geist must face him. The sequel OVA to M.D. Geist offers mecha action with a science fiction backdrop.