Duo, the Great Destroyer
Somewhere in the ocean in Asia, Sally and her team are looking for the other Gundams, and they find Gundam 01. As an OZ ship approach and send out their units, the former Federation deep sea team, now working with Sally, attack. Sally's team salvage the sunken suit.
On the moon base, work continue on the new mobile suit factory. Tsubarov tells them to not worry about the production costs, resources are unlimited in sapce. Tsubarov orders Professor G to throw away the old Gundam parts, as they don't need it anymore, but G and Dr. J. has other plans for the pieces... Elsewhere, Master O is secretly continuing the upgrade of Gundam 02 (Duo's Deathscythe), and Gundam 05 (Wufei's Shenlong).
Zechs attends a political meeting and questions the leaders will to arm the colonies. The leaders think they need to arm themselves to avoid war. The leaders claims to dislkie Romefeller, but have allied with OZ to protect their colony. Zechs comments that anti-OZ groups on earth find the OZ the greatest source of the instability. The colony leader claims that the Gundam scientists have been captured and executed, but Zechs doesn't believe this. The colony leaders say they still can't switch sides...
A TV broadcast tells that mass production of the new mobile suits have started, and every colony send material to the factory on the moon. The announcer assures the colony citizens that they needen't worry about their safety anymore, Treize and Lady Une of the OZ is here to protect them. Duo snorts at this statement, and thinks that everyone must've forgotten it's those two they were afraid of only a little while back. He's overheard by a young female OZ recruit, who thinks he's wrong. She introduces herself as Hirde Schbeiker, and comments that most students on this colony will apply for jobs at the moon factory. Duo says he should probably do it as well, then. Hirde tells him that the next entry exam is in a week, before she leaves.
Wufei and Heero are being taken to the moon base. Wufei asks Heero if they're going to be used as test pilots for the new mobile suits, but Heero thinks it's more likely they're the targets...
Trowa reads files in the OZ computer, but can't understand why OZ don't just conquer the colonies, as it would be the easist way. Trowa comments that an unknown "he" might know something why this is so.
Wufei comments that Treize wants a duel with the conceited colonies.
Duo tries to sneak his way onto the shuttle heading for the moon with false papers, but Hirde recognises him and tells him the test isn't until the next week. Duo knocks Hirde down after she exposed him, and steals a Leo. Duo takes off into space, and claims that his goal is to destroy the base on the moon, but he's too far away from it now, as Hirde suddenly appears in an OZ suit and attacks. Hirde states she's fighting for the peace of the colony, and Duo is stunned to hear this, because he's fighting for that too. He questions Hirde, why are they fighting each other, if they have the same goal? As a scout ship fires on them, Duo pushes Hilde's suit out of the way, taking all the hits himself.
Later on, Duo has been brought in for questioning, and Hilde wants to know why he helped her, she was prepared to die. She recognises him as the wanted Gundam pilot. They talk about the war and the colonies, and as Hirde reveals that Duo will be taken to the moon base, Duo comments that this suits him fine, because his mission is to destroy that base. Hilde gets annoyed, why doesn't Duo treat her like an enemy, and puts her gun to him forehead. Duo maintains that they're not enemies, and that she reminds him of himself a while back - waging war all by himself. Hilde lowers her gun...
Hirde asks her superior if giving Duo a reprimand isn't enough in this case as he didn't reveal anything of importance, but he says he's been given the orders to kill everyone from the resistance. Suddenly, an explosion rocks the ship. Duo has broken out of the handcuffs, and is on his way to steal a mobile suit in the hangar, as Hirde shows up there. Duo orders her out of the way, as he's about to blow up the door out. In the battle outside the shuttle and on the moon surface, Hirde ends up helping Duo escape because she doesn't know who's ally or enemy anymore, something that will have severe consequences for her later, according to her commanding officer. She even blows up the door into the moon base, and tells Duo to go do what he must.
Once inside the moon base, Duo accesses the computer to find out where he's supposed to go, but is discovered by OZ soldiers, and has to flee under heavy fire. The moon base officer gets news from Hirde's commaning officer that Duo's about to blow up the mobile suits factory, and orders everyone to capture him. Duo escapes through a hatch and ends up in the hangar with Deathscyte and Shenlong, much to his surprise. He talk briefly with the professors, who are happy to see the fourth Gundam pilot show up on the moon base. They tell him that his suit will be finished in a month, and wonders if he can survive that long. Duo agrees, and surrenders, so that the professors can capture him and take him to the OZ soldiers before they discover the Gundams. In order to make it look more beliveale, they knock Duo out rather violently, before handing over the unconscious Gundam pilot to the OZ soldiers, claiming that he tried to kill them. Duo is taken to a cell on the base, where Heero and Duo waits. Heero comments that Duo has failed his mission, neither of them succeeded in destroying the base or killing the professors. Duo isn't so sure about that, and tells them about the newly upgraded Gundams.
Trowa reports to Lady Une - ambassador Milliard Peacecraft has been safely escorted back. Lady Une comments that they will probably have to fight Zechs Merquise in the future, as the man has his own way of operating. She also says that she'll do what she can to guide the world towards Treize's ideals.