A mysterious mobile suit, G-Self, is being pursued by a group of space pirates and the Capital Guard. The pirates capture the suit and the Capital Guard seizes Raraiya Monday, its pilot.

Capital Territory is attacked by space pirate mobile suits led by Cahill Saint, who wants to rescue Aida. Bellri kills Cahill in an act of self-defence as Aida watches.

Piloting the Montero, space pirate ace pilot Klim Nick tries to once again assault Capital Territory in an attempt to rescue Aida from its clutches.

Klim and Aida return to the space pirates' mothership, the Megafauna, with the G-Self, along with Bellri, Noredo, and Raraiya, who are held hostage.

The Capital Army unveils a new mobile suit, the Elf Bullock, piloted by the mysterious Mask who leads a team to once again attack the Megafauna.

The Megafauna launches into space in order to create a distraction for the assembling Amerian Space Fleet.