Universal Century 0083: Zeon intelligence has identified a prototype Gundam designed for nuclear attack under development by Anaheim Electronics. A former Zeon ace and a small band of Principality soldiers are dispatched to Earth to capture the Gundam as part of Operation Stardust. When the Zeon successfully make off with the prototype, the Earth Federation assigns the mobile suit carrier Albion to locate and recover the missing unit. When the stolen Gundam fires at the space fortress Konpei Island, the Federation Space Force suffers a catastrophic loss. As the Federation regroups, they learn that the Zeon have captured a space colony, Side 7, ostensibly with the objective of colliding it with the moon. When the colony's course is unexpectedly changed toward Earth, the true objective of Operation Stardust is revealed.
The series ends with the creation of the Titans, an elite Zeon-hunting division of the Federal Forces, and the main antagonists in Zeta Gundam.
- gundam.wikia.com