Gundam EX A

Some time after the events of Gundam EXA, Sthesia Awar informs Leos Alloy that she discovered a new GA data cluster from a computer outside of Jupiter X. The two dive into the new data and find themselves in the Universal Century, during the attack on Side 7. However, after entering the colony, they find that the inside was in ruins, and the RX-78-02 Gundam has been destroyed before it could be activated by Amuro Ray.
The two discover a faint life sign in the colony, the source of which is Themis Chiron, a G-Diver from Saturn II. Chiron warns the two to get away as soon as possible, or they would be caught in the conquest of Mars I.

Whereas the main story of Mobile Suit Gundam SEED focuses on the struggles between the Earth Alliance, ZAFT, and Orb Union, the Astray series is focused on the three MBF-P0x mobile suit prototypes (however mainly on Lowe Guele) and their respective pilots and organizations, who mainly exist on the outskirts of the main SEED storyline. The MBF-P02 Astray Red Frame is piloted by Lowe Guele of the Junk Guild, and the MBF-P03 Astray Blue Frame is piloted by Gai Murakumo of the mercenary group Serpent Tail. The third Astray, MBF-P01 Astray Gold Frame, is piloted by the primary antagonist of the Astray story, Orb nobleman Rondo Ghina Sahaku, and later by his twin sister Rondo Mina Sahaku.

As Celestial Being begins their anti-war activities, Fereshte begins to move in with the group being led by Chall Acustica, an ex-veteran of Celestial Being who had ended her service as a Gundam Meister after getting scarred in an unknown accident. Under her wing is Fon Spaak, an 18-year old career criminal forced into Fereshte's service by using the GNY-004 Gundam Plutone as part of his "services" as a Meister pilot.