The latest AI, Prometh, suddenly goes rogue and launches a rebellion. At the same time, Sohisa, chairman of the development company Fuujin Consortium, mysteriously disappears. Using her father's "Super Noid Project," Sohisa's daughter Itsuka quits her job as a teacher and transforms into the super-steel warrior Windsor. Prometh leads the Mechanical Life Legion Metadoil, reawakening the monstrous bird Buribyrdon buried beneath Tokyo, seeking to harness its immense power to dominate the world. Windsor rises to battle to stop this conspiracy, but standing before her is the high-ranking commander Runedo, who wields the powerful mechanical tentacle weapon Octogear. Now, Windsor's fight begins! [BAD END]