Five pilots and their Gundams are dispatched to Earth to begin Operation Meteor. Four of them land without incident, but one, Heero Yuy is intercepted.

Oz advances into outer space. To try and stop them, Trowa engages in what may be his final battle.

The United Earth Sphere Alliance collapses, sending the entire planet into a panic. Heero and Duo continue to battle against Oz, and Zechs searches for the ruins of the Sanc Kingdom.

Wu Fei fights on alone. On Earth, Treize’s forces gather once again. Zechs orders the now-completed battleship Libra directed at earth.

Treize removes Queen Relena from her position. Meanwhile, a battle for Space Fortress Barge begins, with the Gundam pilots in the middle.

A battle program based on the Epyon’s operation system is loaded into the Oz forces. The Gundam pilots must engage them in battle. Heero encourages Quatre to take command while he has another battle.

Duo attacks the Libra, threatening to destroy them if they don’t surrender. Relena arrives in a shuttle to talk to Milliardo.

Hilde sneaks onto the Libre and steals valuable data, but she is discovered and pursued. Meanwhile, the White Fang prepares to battle Earth and destroy the Gundam pilots.

Heero sneaks onto the Libra and goes with Relena to see Zechs. Treize, forces ready to attack, challenges Zechs to one duel to settle the war. But Zechs refuses.

The Libra refuses to change its course away from Earth, so Quattre and the others set the Peacemillion to intercept. The two ships are on a collision course.

Oz moves to destroy the Alliance military once and for all. Quatre and Duo head to outer space to warn the colonies, only to discover they’ve been declared the enemy.

Heero plans to eliminate the Romfeller Foundation’s leader, while Relena takes her first step towards true peace. Milliardo Peacecraft, the new leader of the White Fang, is intent on destruction.

Noin invites Heero to Antarctica, where Zechs awaits. And another party is about to enter the battle.

The rebel leader contacts Zechs and asks him to bring his Gundam to outer space. And Trowa, still suffering from amnesia, heads out in a Taurus suit.

Guided by Quatre, Duo takes refuge at the Maganac Corps base. Inspired by Heero's actions, the boys begin discussing what to do next. Meanwhile Relena comes to Moscow, pursuing the one who killed her father. She shoots a vengeful bullet through the rose on Lady Une’s chest!

The armed colony citizens, calling themselves White Fang, start taking over Oz bases. Quatre and Noin search for the other Gundam pilots. And the Romfeller Foundation supports Relena as their representative.