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.

(Source: Wikipedia)