Set months after the events of Mobile Suit Gundam Unicorn, the story focuses on two former Principality of Zeon Remnants, Former Weapons Developer Arlette Almage and Former Test Pilot Danton Hyleg.

The year is Universal Century 0088. Directly after the end of the Gryps War, Haman Karn and her army of Zeon remnants on the asteroid Axis begin their quest of reviving the lost empire of the Zabi ...