Orpheus Zevon runs with a terrorist cell and pilots the Knightmare Frame Byakuen, hunting whoever killed the woman he loved. Oldrin Zevon flies the Lancelot Grail for the Glinda Knights, Britannia's own anti-terrorist unit, which puts her opposite nearly every fight he picks. The two share a surname and almost nothing else. Set between the first and second seasons of the Code Geass anime, the manga alternates between their viewpoints while the empire's war with its insurgents grinds on.