Plot
The year is Universal Century 0223. The former Earth Federation has collapsed, and the space colonies have shaken off their colonial pasts and now refer to themselves as independent space "Settlements". In this new power scheme two factions have emerged: the Congress of Settlement Nations (CONSENT), which is largely made up of the former Earth Federation government and Sides 2, 3, 5, 6, 7, and the Settlement Freedom League, composed of Sides 1, 4, and the Lunar Cities.
Mark Curran is an ex-CONSENT pilot who now works for Hydro-Gen, an independent research facility located at the Deep Face Trench. While out on a harvesting run, Mark saves CONSENT lieutenant Tim Holloway. Shortly after the lieutenant is saved, the lab is commandeered by the Congressional Armed Forces, led by Mark's former superior, Jack Halle. As the facility's security system is triggered, Mark goes off to investigate. Mark saves one of the intruders, Cynthia Graves, from Jack's firing squad after she surrenders, while another intruder is killed by the gunfire.
The CONSENT is in the midst of a global food shortage, with its military leaders threatening force to take over the neutral Side 8 Settlement of Gaea. General Garneuax asks Mark to interrogate Cynthia, who is revealed to be a Gaean rebel. Mark helps Cynthia escape, who shows him an enzyme that allows food to grow underwater, which can solve the food shortage. The two meet up with Cynthia's interns, Franz Dieter and Kobi, and the group escape into space along with Mark's fiancée Mimi Devere. Meanwhile, Jack frames Mark for the murder of a CONSENT soldier, whom Jack had killed himself. The group arrives at the Side 4 Settlement of New Manhattan, meeting with Philippe San Simeone, an old acquaintance of Mark, and a member of the Illuminati, a private paramilitary organization. Philippe entrusts Mark with a new prototype mobile suit, the G-Saviour, but he refuses to pilot it. Mark changes his mind to help clear a path through a debris field on the way to Gaea.
Arriving at Gaea, Mark and Cynthia meet with Chief Councilor Graves, Cynthia's father. Graves tell them that a Congressional Armed Forces fleet is on its way to Gaea, looking to apprehend the two and the enzyme sample. After seeing Mark and Cynthia share a kiss, Mimi hacks into Gaea's defense system, causing debris clearing guns to fire at a CONSENT ship. After Mark concludes that a mobile suit carrier is on its way to attack Gaea, Cynthia asks Mark to lead Gaea's mobile suit force against the approaching CONSENT forces. Both sides launch their mobile suit forces, with CONSENT greatly outmatching Gaea's obsolete RGM-196 Freedom mobile suits. Jack sorties out in the CAMS-13 MS-Rai, with Mark engaging him in battle with the G-Saviour. Congressional Armed Forces enter Gaea, with Kobi being critically wounded while trying to protect the enzyme sample. After retrieving the sample, Garneuax reveals his true intentions to destroy the sample and implement a policy of selective starvation across the CONSENT. With Gaea's forces dwindling, Philippe and the Illuminati's forces arrive and push back the CONSENT attack. Jack is defeated by Mark and the G-Saviour, who enter Gaea to disable the remaining CONSENT forces.
Garneuax and his forces, along with Mimi, escape from the Settlement in a Gaean space shuttle. Mimi reveals that she switched out the enzyme sample, which is back in the possession of Cynthia, as the shuttle is shot down by CONSENT forces. With Garneuax dead and Jack incapacitated, the Congressional Armed Forces withdraw from Gaea. Councilor Graves gives a speech stating that Side 8 will stay independent, while Mark returns to Earth with Cynthia.
