"After War Gundam X" is set in a post-apocalyptic future where Earth has been devastated by a catastrophic war between the Earth Federation and the space colonies, known as the Seventh Space War. The conflict culminated in the colonies dropping massive orbital weapons, called Mobile Suits, onto Earth, causing widespread destruction and rendering much of the planet uninhabitable. The war ended abruptly when the Earth Federation destroyed the space colonies, leaving humanity fractured and struggling to rebuild.

The story takes place 15 years after the war, in a world where Mobile Suits have become relics scavenged by "Vultures," who sell them for profit. The protagonist, Garrod Ran, is a skilled and resourceful 15-year-old Vulture who stumbles upon a mysterious girl named Tiffa Adill. Tiffa possesses Newtype abilities, a rare psychic sensitivity that was highly sought after during the war. Garrod rescues her from the oppressive New United Nations Earth (NUNE), a militaristic faction attempting to consolidate power and control the remnants of humanity. During the rescue, Garrod discovers the Gundam X, a powerful Mobile Suit from the war, and pilots it to protect Tiffa.

As Garrod and Tiffa travel together, they are joined by a diverse group of allies, including Jamil Neate, a former war hero and Newtype who now leads a group of rebels fighting against NUNE. Jamil’s past is deeply tied to the Gundam X and the events of the Seventh Space War, and he becomes a mentor figure to Garrod. The group’s journey is driven by their shared goal of preventing NUNE from exploiting Tiffa’s Newtype abilities to reignite the war and establish totalitarian control.

Throughout the series, the narrative explores themes of survival, the consequences of war, and the struggle for freedom in a broken world. The characters confront their pasts and grapple with the moral complexities of their actions, particularly as they uncover the truth about the war and the role of Newtypes in shaping humanity’s future. The story builds toward a climactic confrontation with NUNE, as Garrod and his allies fight to protect Tiffa and prevent the resurgence of global conflict.

The series balances action-packed Mobile Suit battles with character-driven drama, offering a nuanced portrayal of its post-apocalyptic setting. Garrod’s growth from a self-serving scavenger to a selfless hero, Tiffa’s struggle with her identity as a Newtype, and Jamil’s redemption arc are central to the narrative. The interplay between these characters and their shared mission creates a compelling story that examines the enduring impact of war and the resilience of the human spirit.