"Mobile Suit Gundam Seed Special Edition" is a condensed retelling of the original "Mobile Suit Gundam Seed" series, re-edited into three feature-length episodes. The story is set in the Cosmic Era, a future where humanity is divided between Naturals, who are unmodified humans, and Coordinators, genetically enhanced individuals. Tensions between these groups escalate into a full-scale war between the Earth Alliance, dominated by Naturals, and the Coordinators' nation of ZAFT (Zodiac Alliance of Freedom Treaty).

The narrative centers on Kira Yamato, a Coordinator living on the neutral space colony Heliopolis. When ZAFT attacks the colony to seize the Earth Alliance's newly developed Gundam mobile suits, Kira is thrust into the conflict after piloting the Strike Gundam to protect his friends. As the war intensifies, Kira struggles with his role as a soldier and his desire to protect those he cares about, including his childhood friend Athrun Zala, who fights for ZAFT. The two find themselves on opposing sides, torn between their personal bond and their duties as soldiers.

The Earth Alliance's ship, the Archangel, becomes a focal point of the story as it carries the Strike Gundam and its crew, including Kira, through numerous battles. Key characters include Lacus Clyne, a ZAFT-affiliated singer who advocates for peace, and Cagalli Yula Athha, a fiery pilot from the neutral nation of Orb who becomes a close ally to Kira. The series explores themes of war, identity, and the ethical implications of genetic engineering, as characters grapple with their beliefs and the consequences of their actions.

The Special Edition condenses the original 50-episode series, streamlining the plot while retaining its core narrative arcs and character development. It maintains the original's focus on the personal struggles of its protagonists, the moral ambiguities of war, and the impact of technological advancements on society. The condensed format provides a more accessible entry point for viewers while preserving the emotional weight and intricate political dynamics of the original story.