In what was previously Side 4 "Moore," Federation soldiers and Zeon forces engage in a furious combat in the Thunderbolt Sector. The Thunderbolt Sector is a shoal zone comprised of the rubble of wrecked space colonies, called after the electrical discharges from the metal debris. Io Flemming, an MS pilot, is among the Federation forces ordered to the location, where Zeon sharpshooter Daryl Lorenz awaits them on the battlefield.