Heero sneaks on board Libra to rescue Relena and they both go to confront Zechs, but they fail to convince him to end the war. Meanwhile, Treize, piloting the new Tallgeese II mobile suit, leads the World Nation forces into battle in space and offers to duel Zechs one-on-one to decide the fate of the world, but Zechs fires Libra's cannon as his refusal. Treize is saved thanks to the timely arrival of Lady Une in the Wing Gundam (which Heero left behind in Luxembourg) and he orders his forces to destroy Libra.