The Glass Kingdom
Heero and Quatre arrives at the school in Sank Kingdom, and Heero displays his reluctance to be there at all. He says he'll leave as soon as he gets his Gundam back, but Quatre protests - they must protect the princess! Relena welcoms them to the school, and Heero once again states he has no intention of staying. Relena comments that they're searching fo the missing Gundam pilot Trowa, and Relena thinks Heero would want to stay until they find out more. Heero asks Relena if it's such a great idea to have a Gundam pilot in the kingdom, but Relena thinks there shouldn't be any trouble as they're only there as students. Later on, Relena introduces them to the class she's leading. In a flashback from events before the series started, we get to see Dr J give Heero his codename - Heero Yuy.
In a fencing class later on, Heero gets introduced to Dorothy Catalonia, who states she wants to be his friend. However, since she says she knows Heero doesn't like weak girls, she must prove herself worthy of his friendship, and a fencing duel begins. During the duel, Dorothy tells Heero what she knows about the real Heero Yuy - the peaceful colony leader. She also claims to know of another Heero Yuy - a freedom fighter for the colonies. After Heero won the duel, he denies being either of the Heero Yuy's Dorothy mentions, and after he left, she comments to herself that she thought he'd try and hide his identity.
Relena confronts Noin with Romefeller's request to do battle in Sank Kingdom, and Noin tells her about the Pro-Treize forces hiding in a corner of the kingdom. She informs Relena that she's ordered them to leave, as they don't want to get dragged into the fight. Relena protests, and wants to treat the Pro-Treize forces as refugees to prevent more casualties. Noin promises she'll contact them.
Meanwhile at the Pro-Treize force's camp, their leader reveals that they've only been used by Romefeller to involunterily invade Sank, and that they must leave as soon as possible. Before that happens, Noin contacts them, and offers them political asylum. The commander wants to accept it, but says he can't as he suspects this is all a trap to drag Sank into the war. Noine manes that this is just disruptive tactics from Romefeller - to have a battle this near Sank were many of the daughters of prominent leaders from other countries stay to study, will make them nervous. The commander states they'll leave now, but thanks Noin for their effort.
In the Mobile Suits hangar, Heero finds his Wing Gundam, as well as many other suits belonging to Noin.
Relena communicates with OZ forces, and tells them she will treat the Pro-Treize forces as refugees, and if OZ enters their air space, she'll file a formal complaint. The OZ commander states that their info is a bit different - they think Pro-Treize will attack Sank's capital, and are only hiding in the country to avoid OZ. He states that they'll make things easy for everyone by attacking the Pro-Treize forces. As Relena protests, the OZ commander switches the viewscreen off, and orders the attack to begin.
Relena orders Pargan to take her to the scene of the battle, she says she'll stop it herself. When Pargan protests since it's far too dangerous, Relena takes off by herself. She runs to the front gates of the school, where Dorothy convenientally is waiting for her... Dorothy urges Relena to hurry up, as the battle will soon begin.
Noin takes Quatre to the mobile suit hangar, where she reveals that Relena knows nothing about the country being armed with mobile suits. Quatre means it's for the better, they must follow Heero and protect the kingdom.
Int he forest camp of the Pro-Treize forces, work is finished on planting their surrounding with explosives to blow themselves up with if they cannot defen themselves. As mobile suits approach, Heero suddenly arrives. He thinks that sicne they're willing to die, they might as well do it while protecting the country. They decide to side with the boy who they belive is a Gundam pilot, and fight Romefeller.
The battle between OZ and Pro-Treize forces begins, and OZ is surprised at the resistance they're meeting. Meanwhile, Dorothy and Relena make their way towards the battlefield, and Dorothy explains she's happy to have been born in a time or war, because she likes people at the battlefield so much. Back on the battlefield, OZ forces are in for a surprise as a Gundam suddenly appears, and attacks them. Unfortunately the carrier plane that hid the Gundam was shot down, and nearly crashes into Dorothy and Relena's car, only missing it by a few meters as Heero saw the threat. As the car stops on a brigde, OZ mobile dolls locks their target on it... when Quatre and Noin timely arrives on the scene and saves Relena's life for the second time in 10 seconds...
As day breaks, the battle is over and Noin apologises to Relena for arming the country aginst her knowledge. Heero talks to Relena, and tells her that he believes that the world is heading towards absolute pacifism, which will lead to more impatient battles like this from the Romefeller. Heero means that the country will need protection. Heero states that he's repayed the debt for Relena finding out about Trowa now, and that he'll now do what he believes in - to protect the country by building a defence force with Noin. Relena gives them their blessing to do so.