Amate Yuzuriha is a high school student living a peaceful life on the Izuma colony at Side 6, five years after the One Year War ended with the Principality of Zeon's victory. Her life changes when she encounters Nyaan, a war refugee, who introduces her to the underground mobile suit dueling sport called Clan Battle. Amate adopts the entry name "Machu" and begins piloting the Zeon prototype Gundam gMS-Omega GQuuuuuuX in these illegal but lucrative fights, quickly becoming immersed in the fierce battles.

Meanwhile, a Zeon task force led by Challia Bull, a former subordinate of Char Aznable, is on a mission aboard the warship Sodon to locate Char and his Red Gundam, which mysteriously disappeared during the war in an event called the Zeknova. The Red Gundam suddenly reappears near the Izuma colony, attacking the Zeon ship. The colony police, equipped with mobile suits, also engage the Red Gundam, escalating the conflict.

During the ensuing battle, Zeon deploys the GQuuuuuuX Gundam, piloted by Xavier Olivette, to defend against the Red Gundam. However, Xavier struggles to activate the Psycommu system--a brain-computer interface designed for Newtypes--and is forced to abandon the mobile suit after crashing it into the colony. The battle causes significant destruction within the colony, drawing the attention and ire of the local military police.

Amate, witnessing the police's abuse of power during the chaos, impulsively commandeers the damaged GQuuuuuuX. Unexpectedly, the Psycommu system activates in her presence, allowing her to control the Gundam with her willpower despite her inexperience. Using this newfound ability, she disables the police mobile suits, enabling the Red Gundam and its pilot, a boy named Shûji, to escape. This event marks a turning point, as Amate becomes deeply involved in the larger conflict surrounding the mysterious Gundam and its pilot.

As Amate continues to participate in Clan Battles under the name Machu, she hones her skills piloting the GQuuuuuuX. Her connection to the Gundam grows stronger, and she becomes a key figure in the unfolding struggle between the remnants of Zeon forces, the Federation, and the colony authorities. The series explores her internal conflicts, her motivations to protect her friends and colony, and the mystery surrounding Shûji and the Red Gundam.

Throughout the story, the pursuit of Char Aznable's Red Gundam by various factions intensifies. Challia Bull suspects that the Red Gundam is no longer piloted by Char and questions the identity and intentions of its new pilot. The narrative follows the escalating confrontations between the Gundams, the political intrigue within the Zeon remnants, and the impact of these battles on the colony's inhabitants.

The series culminates in a large-scale confrontation inside the colony, where Amate, Shûji, and their respective Gundams face off against Zeon forces and the military police. The battles are detailed and intense, with each mobile suit maneuver and attack described step by step, showcasing Amate's growth as a pilot and her increasing mastery of the Psycommu system. The conflict exposes the corruption and power struggles within the colony and Zeon factions, leading to decisive moments that shape the future of the colony and the Gundam pilots involved.

In the final sequences, Amate fully embraces her role as the pilot of the GQuuuuuuX, using her unique connection to the Gundam to protect her friends and challenge the oppressive forces within the colony. The Red Gundam and its pilot Shûji remain enigmatic but pivotal, hinting at deeper mysteries and future developments beyond the immediate conflict. The story closes with the colony entering a new era, marked by the unresolved tensions and the emergence of new heroes and threats in the Gundam universe.

The ending of Mobile Suit Gundam GQuuuuuuX concludes with Machu and Nyaan successfully dismantling the Yomagn'tho, preventing Kycilia's plan to destroy humanity and create a Newtype paradise. Char Aznable, revealed to be Shirouzu, escapes with Machu's help and pilots the Red Gundam. The series ends on a hopeful note with most characters surviving and finding new paths, while the villainous Zabi family members are defeated.

In the final episode of Mobile Suit Gundam GQuuuuuuX, the narrative unfolds as follows:

The episode opens with Machu and Nyaan reaching the ocean, symbolizing a moment of calm before the climax. Machu shares her plans with Nyaan, setting the stage for their confrontation with Kycilia.

Kycilia, having recovered the Rose of Sharon--revealed to be an alternate universe Lalah Sune--commands Nyaan to pilot the Yomagn'tho, a powerful mobile suit designed to annihilate humanity and transform Earth into a Newtype paradise. This plan reflects Kycilia's extremist vision for the future.

Meanwhile, Challia Bull initiates a coup against Kycilia, aiming to establish a more genuine Newtype paradise. This political upheaval adds tension and complexity to the conflict.

Machu and Nyaan engage in a fierce battle to dismantle the Yomagn'tho and free the alternate Lalah. Their fight is intense and filled with escalating twists, showcasing their determination and the stakes involved.

During the battle, Shuji briefly reappears, causing Machu to become separated from the GQuuuuuuX. This separation leads Machu to a confrontation between Kycilia and Shirouzu. It is here that Shirouzu is revealed to be Char Aznable, who survived the Zeknova Incident and infiltrated Zeon as an engineer. With Machu's assistance, Char escapes Kycilia's grasp and makes his way to the Red Gundam.

The final scenes depict the defeat of the Zabi family members, who were the primary antagonists throughout the series. Challia survives and helps install Artesia (Sayla Mass) as the new leader of Zeon, marking a significant political shift.

Machu matures significantly, emerging as a more well-rounded character. Nyaan finds true friendship and loyalty with Machu. Shuji's fate remains mysterious as he disappears during the climax.

The series closes on a hopeful note, subverting the traditionally tragic Universal Century Gundam endings by granting most characters a brighter future. Char Aznable reunites with Lalah Sune for the first time, and the cycle of conflict appears to be broken, suggesting a new era for humanity and Newtypes alike.

In summary, the ending is a complex, multi-layered sequence of battles, political coups, and personal revelations that culminate in the dismantling of Kycilia's destructive plan, the survival and growth of key characters, and a hopeful reimagining of the Gundam universe's future.

Mobile Suit Gundam GQuuuuuuX (2025) does not have a post-credit scene. According to a detailed source reviewing the film, there are no extras during or after the credits.

However, the series is noted for its non-credit ending sequence, which is a touching slice-of-life scene featuring the characters Machu and Nyaan living together peacefully. This ending has been praised for its emotional warmth and domestic tranquility, showing moments like them eating pizza and dancing, with a gentle whisper of the phrase "Mou dou natte mo ii ya" in sync with the ending theme by Suisei Hoshimachi. This sequence is part of the ending credits rather than a separate post-credit scene.

In summary, while there is no post-credit scene, the ending sequence itself provides a memorable and emotionally resonant closure to the episode or film.

Mobile Suit Gundam GQuuuuuuX (2025) is rated PG12 to TV-14 depending on the country, indicating it is not fully family-friendly for young children but may be suitable for older children and teens with parental guidance. The show contains mild violence and mild profanity, with no alcohol, drugs, or smoking depicted.

Potentially objectionable or upsetting content includes:

• Violent mecha battles involving shooting, beam cannons, and close combat with weapons such as beam swords and axes, including scenes of decapitation and destruction of infrastructure.
• War and conflict themes, including military actions, explosions, and casualties implied or shown.
• Scenes of police and military forces destroying buildings and pursuing characters, which may be intense for sensitive viewers.
• Some mild frightening or intense scenes related to combat and pursuit.

There is no explicit sexual content or strong language, but the intensity of the war and combat scenes, along with the depiction of death and destruction, may be upsetting for younger children or sensitive viewers. The show is best suited for teens and older audiences familiar with the Gundam franchise or mecha anime.