Scar
After the Meisters land on the damaged Kataron base in the Middle East, they were greeted with accusations and distrust. At this time, Tieria brings Saji back to the Ptolemaios 2 after he spotted him all shaken up in guilt. A-LAWs launches another operation to sortie against the Ptolemaios 2. The Meisters launch to intercept while Sumeragi is out of action after a flashback of a failed operation she led that resulted in her love interest, Emilio's, death. Saji follows Ian to a Ptolemaios 2 turret, while initially hesitating to do so before he fires it at a GN-X III piloted by Louise Harlevy. Allelujah encounters difficulties while facing Soma and Setsuna with Mr. Bushido. As a result, Setsuna goes into trans-am mode with his 00 Gundam.
Aired 09/11/2008EP 6 - Scar

Mobile Suit Gundam 00 Second Season
Four years have passed since the final battle between Celestial Being and the UN Forces. Humanity, having established the Earth Sphere Federation, forms an independent security preservation force, A-Laws, separate from the formal Federation army to further unify nations and the will of mankind. But the reality was the inhumane oppression of misuse of powers, doctrines, and ideologies in the name of unity.
Saji Crossroad has followed the path to becoming a space engineer to keep his promise to Louise Halevy, who in turn was compelled to become involved in Federation government reform and joined A-Laws as a mobile suit pilot during the four-year gap.
Meanwhile, Setsuna F. Seiei, having survived the climactic battle four years ago, witnessed a change in the world due to the actions of Celestial Being. With the defeat of Alejandro Corner, he dreamed of a peaceful world without conflict; but before his own eyes was the reality of the continuing strain on peace, the oppression caused by A-Laws. He decides once more to fight with Gundam, the power with the potential to change the world.
(Source: Wikipedia)