"Mobile Suit Zeta Gundam 1/2" is a manga adaptation of the anime series "Mobile Suit Zeta Gundam," which is part of the larger "Gundam" franchise. The story is set in the Universal Century timeline, seven years after the events of the original "Mobile Suit Gundam." The Earth Federation has established the Titans, an elite task force meant to suppress anti-Federation movements, but their brutal methods and authoritarian rule spark widespread resistance. The Anti-Earth Union Group (AEUG), a coalition of dissidents and former Federation soldiers, rises to challenge the Titans.

The protagonist, Kamille Bidan, is a young and hotheaded mobile suit pilot from the colony of Green Noa. After a confrontation with Titans officers, Kamille steals the prototype Gundam Mk-II and joins the AEUG. His journey intertwines with the struggles of other key characters, including Quattro Bajeena, a mysterious and skilled pilot who is later revealed to be Char Aznable, a veteran of the One Year War. Emma Sheen, a former Titans officer who defects to the AEUG, and Four Murasame, a cyber-Newtype manipulated by the Titans, also play significant roles in the narrative.

The plot explores themes of war, political corruption, and the ethical implications of advanced technology, particularly the development of Newtypes—humans with heightened spatial awareness and psychic abilities. Kamille's growth as a pilot and his evolving understanding of the conflict drive the story forward. The AEUG's battles against the Titans escalate, leading to large-scale space battles and personal confrontations. The manga adaptation closely follows the anime's storyline, emphasizing the emotional and psychological toll of war on its characters.

The narrative builds toward a climactic confrontation between the AEUG and the Titans, with Kamille at the center of the conflict. The resolution of the story highlights the cyclical nature of war and the enduring struggle for peace in the Universal Century. The manga effectively captures the tension, action, and character development of the original series, making it a compelling entry in the "Gundam" universe.