Mobile Suit Gundam Thunderbolt 2

During the Earth Federation's assault on the Zeon's A Baoa Qu fortress, Io and his comrades escape captivity while several Zeon forces retreat, taking Io's Gundam with them. Eight months after the end of the One Year War, the Federation continues to battle Zeon remnants on Earth. The Federation carrier Spartan enters Earth orbit, but a Musai-class ship launches its Komusai shuttle for a kamikaze run on it. Suddenly, a new Gundam piloted by Io is launched from below and it slices the Komusai in half to save the Spartan.

The South Seas Alliance, a Buddhist radical cult faction of the Federation, plots to declare itself independent. Furthermore, it is discovered that they possess the Reuse P. Device technology of Daryl's Psycho Zaku. The Spartan is assigned to track and destroy the Psycho Zaku before the South Seas Alliance can mass-produce the technology. In Antarctica, Bianca's squadron is ambushed by Zeon mobile suits. Io sorties in the Atlas Gundam and dispatches the enemy units before facing a Grublo mobile armor. The battle sends both units far too deep underwater and Io with his equipment lost slowly sinks to the bottom of the sea, but Bianca in her damaged Guncannon Aqua lifts him back to the surface.

Due to the emotional trauma Karla suffered during the One Year War, her mind has regressed back to that of an adolescent child with the Zeon Remnants now trying to take care of her in hopes of her adult mind to recover. Daryl's Acguy squadron heads to a South Seas Alliance-controlled city in Southeast Asia to retrieve a spy, but their cover is blown and they must fend off against the island's mobile Suits. Meanwhile, the Spartan is confronted by a South Seas Alliance mobile suit Squadron, with Io's former commander and lover Claudia leading them.

Having entered the jungle, the Acguy team finds itself in a fierce battle with the South Seas Alliance's Dahle forces. Refusing to abandon his mission of contacting the spy, Daryl is backed into a corner. Meanwhile, the South Seas Alliance's border garrison has deployed Goufs and Do-dais to block the Spartan's path. As they resort to suicide attacks in an attempt to break into the ship, what are they trying to achieve? In order to confirm the identity of the garrison commander, who gives her name as Claudia Peer, Io boards a GM Ground Type-C and fights together with Bianca's Corvette Booster. Intercepting the Goufs and Do-dais, they take them down one by one. The three-way fighting continues to intensify, in the dense jungle and at high altitude...