Meanwhile, Orga claims the Brewers' remaining mobile suits and one assault ship from Brooke Kabayan at gunpoint. Taking over as replacement commander, Takaki has difficulty handling his fellow Human Debris comrades as they are determined to take revenge. Meanwhile, Fumitan is torn between her loyalty to Kudelia and to her real employer. Jasley calls for a conditional ceasefire, but Orga refuses the deal before allowing Mikazuki to destroy the bridge of Jasley's ship, killing the latter and avenging Lafter. Upon their arrival at Admoss Company, Orga discovers that Gjallarhorn manipulated the media to make the public think Tekkadan ignored orders to surrender. While largely forgotten, Tekkadan's surviving members live on with new identities in the Admoss Company, Sakura's orphanage, the Martian Union and the Kassapa Mobile Worker Factory, with all of them remaining in touch. In ensuing battle, the two ships successfully incapacitate the enemy while the latter's mobile suits are gradually eliminated.
Rustal instigates a maneuver using a hijacked revolutionary fleet Graze and firing a Dáinsleif toward his own fleet to justify a massive counterattack with the railguns, which leaves a majority of the revolutionaries' fleet destroyed or crippled. Nevertheless, Tekkadan's precise tactics and Mobile Suit squadron mow down majority of the enemy fleet, but the Dawn Horizon Corps strike back with Mobile Suits of their own with many piloted by disposable Human Debris. Following a tip-off by Jasley, Iok leads a crackdown on the Turbines in his quest to take down Tekkadan. Orga calls McMurdo and asks him for an open communication with Rustal, where he offers the latter a deal; allow Tekkadan's members to live and he will disband Tekkadan and hand over both McGillis and Gundam Bael. Orga contacts Naze, who tells him not to worry about the Turbines and to continue his focus on Tekkadan. Meanwhile, Coral orders Crank to return to the battlefield to erase any evidence of their defeat before the Gjallarhorn inspectors from Earth find out.
He convinced Gaelio to turn Ein into the fearsome monster mecha he has become so everyone would see how far Gjallarhorn would compromise its values to win. . Just as Tekkadan are about to get their hands on Sandoval, Gjallarhorn's Arianrhod fleet arrives and interferes with the mission, revealing that Isurugi and Arianrhod are under two separate and competing chains of command. Akihiro, Shino, and Ride arrive at the scene to assist in the evacuation while Naze sends the Hammerhead on a kamikaze run toward the fleet. Orga, Mika and Merribit later meet with McGillis, who requests Tekkadan's aid in gaining more power to challenge his rival, Rustall Elion, as part of his ongoing plan to reform Gjallarhorn. At the last minute, McGillis boards his Graze Ritter to end the stalemate between both factions himself. Ride assassinates Nobliss and all his cohorts to avenge Orga, while Kudelia visits Atra and Akatsuki - the late Mikazuki's son by Atra - at Sakura's farm, fulfilling her promise to look after them.
He had goaded Carta to accept a suicide mission so he could take her place. Akihiro's unit scrambles to defend the plant, but the Hashmal wipes out a portion of the plant with its beam cannon. Meanwhile, Kudelia and Fumitan meet a masked man who reveals the true motives of those backing their trip to the Dort Colonies. After being severely disciplined by Haeda for luring Gjallarhorn's forces toward the retreating First Corps during the battle, Orga proposes to his comrades in the Third Corps to rebel against their elders. Meanwhile, the flames of the Gjallarhorn power struggle continue to rage in full force.
Meanwhile, Vidar offers cryptic responses to McGillis that suggest he is actually Gaelio Bauduin, his betrayed former comrade, before retreating to help Julieta and Iok. Biscuit, who is driving Orga's vehicle, swerves to throw Orga out before Carta hits it. To make matters worse, all transportation, diplomatic, and military access into Arbrau have been blocked by control of Galan and Radiche, making negotiations or entry for either Tekkadan or McGillis impossible. Wracked with guilt from losing Aston and trusting Radice during the war, Takaki resigns from Tekkadan. Before they can come to blows, Mikazuki intervenes the rebuilt Gundam Barbatos Lupus Rex and battles the Gundam Vidar, but Gaelio reveals that his Gundam uses a pseudo Alaya Vijnana System based on Ein Dalton's brain. However, the route is leaked to Coral, and the transport shuttle is ambushed by Gjallarhorn forces.
The impact of Naze and Amida's deaths is felt all the way to Kudelia's office and Tekkadan's headquarters. It is directed by and written by , a team which previously collaborated on and. Later, Tekkadan celebrate their success in one of the vessel's commercial properties to relieve their stresses. One month later, Orga reports to McMurdo about the incident and Gjallarhorn's searching for other Calamity War remnants on Mars. Orga and Mikazuki visit Gyojan and demand compensation for Tekkadan's losses against the Dawn Horizon Corps, with Mikazuki executing him for being unable to pay reparations, while the rest of Terra Liberionis is later apprehended by Gjallarhorn. They must act fast to trap and destroy the Mobile Armor, as it will set a course for Chryse and wipe out the city's population. Later, Eugene and Akihiro corner Radiche, demanding Galan's whereabouts.
As Atra is being beaten by her interrogators, Mikazuki, Orga, and the rest of Tekkadan race to rescue them. Amida rushes to protect the transports, but is cornered by Julieta and her Reginlaze Julia. Aboard their transport to ship, Kudelia makes a proposal to Makanai that they take a strategic route to Edmonton from Anchorage to avoid Gjallarhorn. As a part of her efforts to make Mars financially independent from Earth, Kudelia Aina Bernstein founds the Admoss Company and enlists Tekkadan as her business partner. Despite his saving her from the Gundam, Carta dies from her injuries while calling McGillis' name, leaving Gaelio anguished. As Tekkadan dispatch the rest of the Plumas, Mikazuki stops the Hashmal from killing McGillis, Isurugi, Ride, and Julieta, risking his body to unleash the Gundam Barbatos Lupus' full potential by releasing its limiters. As Tekkadan struggles to repel the Gjallarhorn forces, Rustal notes McGillis' story will be remembered as a tragic consequence for those thirsting for power and sends Julieta out to finish Tekkadan off.
Meanwhile, Julieta finds and rescues Iok while McGillis and Isurugi are confronted by the Gundam Vidar. Shino and Akihiro propose to rescue the Turbines as the Arianrhod fleet close in on their relay station. Meanwhile, Jasley has his men spy on Tekkadan and McGillis' activities, before informing Rustal's fleet of McGillis' secret trip to Mars through his connections with the Kujan Family. Just as Orga, Chad, and Ride head back to base, they are ambushed by men in suits sent by Nobliss and Orga dies from his wounds. The demonstration becomes deadly when Gjallarhorn forces intervene and Kudelia finds herself involved with the Union. Meanwhile, far away on Mars, the sparks which threaten to ignite a new war have been struck.