Though Operation Odessa is proceeding, the 44th Hybrid Brigade suffers setbacks after its advance is bombarded by artillery fire from Zeon's Dabude-class land battleships. They are reinforced by three RTX-440 Guntanks (advanced versions of the RX-75 Guntank seen in the original series) piloted by a trio of convicts led by Lt. Arleen Nazon, a technical officer blamed and condemned to rot in jail after her lover, Clyde Bettany, defected to Zeon with information on the RTX-440. Arleen vows revenge for destroying her future...