At a testing ground, the AEU is demonstrating its new Enact mobile suit. Suddenly, a white mobile suit descends from the sky and swiftly destroys the Enact. This intruder is the Gundam Exia, and this marks the start of Celestial Being's first mission.

As the world reacts with confusion to Celestial Being's announcement, the Gundam Meisters prepare for a second mission which will clarify their intentions.

The Union ace pilot Graham Aker confronts Setsuna as he leaves Ceylon. In Tokyo, the news reporter Kinue Crossroad begins her own investigation.

The Human Reform League holds a memorial service for the soldiers whose lives were lost in the recent interventions, and reaffirms its opposition to Celestial Being.

Celestial Being's activities have reduced the level of conflict in the world, but there are some who do not welcome this change.

During Celestial Being's intervention in Moralia, Setsuna has been reunited with a figure from his past. His opponent is the mercenary soldier Ali al-Saachez.

An international terror network has begun a campaign of bombing attacks in order to force Celestial Being to halt its armed interventions.

Four months have now passed since Celestial Being began its armed interventions. The initial chaos has subsided, and life goes on.

In the aftermath of the orbital battle, the Human Reform League's scientists realize that one of the Gundam Meisters is actually a former test subject of their own Superhuman Institute.

Although Princess Marina has secured assistance from the United Nations for her troubled homeland, the Kingdom of Azadistan is still in turmoil.

Setsuna's actions have prevented a coup d'etat in the Kingdom of Azadistan, but the conservative leader Massoud Rachmadi remains missing, and the situation continues to worsen.

The three superpower blocs begin planning a massive joint military exercise which will serve as a challenge to Celestial Being.

The Union, Human Reform League, and AEU begin their joint military exercise in the Taklamakan Desert.

The Ptolemaios crew return to space for a rendezvous with Team Trinity. When they finally meet the new Gundam Meisters face to face, Setsuna and his comrades are disturbed by their attitude and behavior.

Team Trinity continues its campaign of armed intervention. Unlike Setsuna and his comrades, they are targeting military facilities of all kinds and exterminating everyone on the scene, even civilians.

Having determined that Team Trinity itself is promoting conflict, Setsuna confronts the Gundam Thrones. Tieria comes to his assistance, and the two Gundam Meisters fight as a team for the first time.