The episode begins with Machu and Nyaan preparing for the upcoming Clan Battle. Machu secretly plans to steal the Pomeranians' prize money during the event, intending to use it for her own purposes. Nyaan is assigned to pilot the GQuuuuuuX Gundam in Machu's place, as part of their con job to deceive their opponents and Annqi, the clan leader. Machu sneaks off to execute her plan, but she is spotted by the military police, who quickly identify her as a wanted individual.

As Machu attempts to escape with the GQuuuuuuX Gundam, her Newtype abilities begin to fluctuate due to her emotional distress over Shuji's disappearance and the failure of her plan. Despite her efforts to evade capture, Challia, a skilled solo pilot, intercepts her. Challia subdues Machu and takes her into custody, effectively ending her rebellion and escape attempt.

Meanwhile, Xavier Olivette locates Nyaan and offers her a position within the Principality of Zeon, serving directly under Kycilia. Nyaan, feeling isolated and with no other options, accepts the offer. This marks a significant shift in her allegiance and sets up a future confrontation between her and Machu.

In a parallel sequence, Challia proves his loyalty to Kycilia by protecting her from an attack by Gates and Deux, two antagonistic forces. After successfully saving Kycilia, Challia gains the trust of both her and Xavier. However, Challia reveals his true intention: he plans to assassinate both Supreme Commander Gihren and Kycilia to prevent a civil war within Zeon. This revelation adds a complex layer to the political intrigue and foreshadows future conflict.

The episode also features intense combat sequences, including the destruction wrought by the Psycho Gundam and the near-catastrophic event called the Zeknova. These battles are depicted with apocalyptic scale and high stakes, emphasizing the chaos engulfing the characters' world.

The episode closes with Machu under arrest, Nyaan now aligned with Kycilia's faction, and Challia's secret plan to eliminate Zeon's top leaders. The stage is set for a climactic confrontation between the Sodon crew, led by Machu, and the Zabi family faction, represented by Nyaan, with the political and personal rivalries reaching a boiling point.

The ending of Mobile Suit Gundam GQuuuuuuX Season 1, Episode 7 "Machu's Rebellion" concludes with Challia capturing Machu and the White GQuuuuuuX Gundam after killing Gates and Deux. Challia reveals his true goal to eliminate both Supreme Commander Gihren and Kycilia simultaneously. Meanwhile, Nyaan has been taken by Kycilia, setting up a potential future conflict between her and Machu. The episode ends with Machu under arrest and the story poised to explore the consequences of the ongoing rebellion and the mysterious Kira-Kira's influence.

In a detailed, scene-by-scene narration of the ending:

The episode builds to a chaotic climax during the Clan Battle, which was intended as a cover for Machu and her allies to execute a con job. Machu and Nyaan plan for Nyaan to pilot the GQuuuuuuX Gundam in Machu's place, allowing Machu to crack a safe containing Tomino Bucks. However, the plan unravels as the Clan Battle is interrupted by a terrorist attack involving a newly built mobile armor piloted by Gates and Deux, who aim to assassinate Supreme Commander Kycilia.

Amid the chaos, the Psycho Gundam arrives and wreaks havoc, engaging in a fierce battle with Nan and damaging the GQuuuuuuX, which crashes. Shuji saves Nan, who urges him to flee with her, but the Kira-Kira activates, causing Shuji to vanish along with the Red Gundam. Amitate, who had stolen cash from Anki, is cornered but manages to escape in the Gwooks. Meanwhile, Xavier and Challia arrive to protect Caesia, killing Goose and Gates in the process.

Challia then demonstrates his formidable solo skills by killing Gates and Deux, capturing Machu and the White GQuuuuuuX Gundam. This act gains him the trust of Kycilia and Xavier Olivette. However, Challia reveals a deeper agenda: he intends to eliminate both Supreme Commander Gihren and Kycilia simultaneously, indicating a larger power play within the conflict.

With Machu captured and under arrest, and Nyaan taken by Kycilia, the episode closes on a tense note. The relationships between these characters are strained, and the episode hints at a future confrontation between Machu and Nyaan. The mysterious Kira-Kira's role remains unclear but appears to be manipulating events and emotions, particularly affecting Shuji's disappearance.

The episode ends with the rebellion's immediate goals thwarted but the larger conflict escalating, setting the stage for the next episodes to explore the fates of Machu, Nyaan, and the impact of the Kira-Kira, as well as the consequences of the Clan Battle's fallout.

Yes, Mobile Suit Gundam GQuuuuuuX Season 1 Episode 7 "Machu's Rebellion" does have a post-credit scene. In this scene, the political intrigue deepens as Xavier finds Nyaan and invites her to join the Principality of Zeon, serving directly under Lady Kycilia Zabi. Nyaan, with no other options, accepts the offer. Meanwhile, Challia Bull, who has just protected Kycilia from an assassination attempt, is seen plotting to assassinate both Kycilia and Gihren to prevent a civil war within Zeon. This sets up a looming conflict where Machu is aligned with Challia and Nyaan with Kycilia, foreshadowing a final battle between the Sodon crew and the Zabi family, with Machu and Nyaan representing opposing sides.

Mobile Suit Gundam GQuuuuuuX, Season 1, Episode 7 "Machu's Rebellion" is not fully family friendly due to its dark and intense content. The episode features high-stakes mecha combat with significant violence, including battles involving terrorists, assassinations, and characters dying or being captured. There are scenes with manic expressions during combat, apocalyptic-scale destruction, and emotional turmoil that may be upsetting for children or sensitive viewers.

Potentially objectionable or upsetting aspects include:

• Graphic mecha battles with destruction and casualties.
• Violent confrontations involving terrorists and assassinations.
• Emotional distress and dark themes such as betrayal, capture, and loss.
• Intense psychological moments with characters under extreme stress or manipulation.
• Some characters exhibit unhinged or erratic behavior during fights.

While the animation and storytelling are praised, the episode's tone is quite serious and may be too intense for younger audiences or those sensitive to violence and emotional conflict.