Endless Poem
Setsuna contemplates his memories of Lockon, who vouched for him when he first became a Meister. Tieria blames Setsuna for Lockon's death, but Sumeragi reminds him that their true enemies are still nearby. Meanwhile, having lost over half their GN-X and the Throne Zwei, Sergei suggests the UN force withdraw. However, UN headquarters reveals that reinforcements are coming and orders a second attack. Back on Ptolemaios, the Gundams undergo repairs and upgrades. Tieria suggesting they destroy all the pseudo-GN Drives so that they can resume their original plan. The rest of the crew contemplate their pasts, but an alarm signals that the UN forces have arrived. Alejandro Corner joins the UN forces in a large, golden Mobile Armor and fires a massive particle cannon at the Ptolemaios, which barely evades the blast. With Kyrios and Nadleeh protecting the ship, Setsuna and Lasse attack Alejandro but can't penetrate his GN Shield. Alejandro continues to fire on Ptolemaios causing massive damage. Tieria activates his Trans-Am system and destroys several GN-X, including Patrick Colasour's GN-X, but suffers extensive damage. A GN-X manages to approach Ptolemaios and fires directly into the bridge resulting in the death of Christina and Lichtendahl. Sumeragi, Ian and Feldt manage to escape in one of Ptolemios' containers. Lasse rams Exia's container into Alejandro's shield and breaks through. Exia and the GN Arms escape the destroyed container and charge back at Alejandro.
Aired 22/03/2008EP 24 - Endless Poem

Mobile Suit Gundam 00
It is the year A.D. 2307. Fossil fuels on Earth have been depleted entirely, with mankind turning to the next available power source: solar energy. During this time, 3 orbital elevators with solar power generation systems are built, each under control by the Union (formerly United States of America), the Human Reformist Alliance (Russia, China and India) and the AEU (Europe). However, not all countries are able to enjoy the benefits of this system, leading to widespread resentment and war. Arising out of the conflict, a mysterious non-profit military organization known as Celestial Being appears, dedicated to end all warfare using Mobile Suits called Gundam. This begins the stories of Gundam Meisters (pilots) Setsuna F. Seiei, Lockon Stratos, Allelujah Haptism and Tieria Erde as they are thrown into conflict between the 3 superpowers and the other various factions.
(Source: Anime News Network)