U.C. 0083. Three years have passed since the end of the One Year War, but remnant forces of the Principality of Zeon continue to struggle against the victorious Earth Federation. After years of planning, the renegade Delaz Fleet is now ready to launch a major operation against the Federation Forces.

The Delaz Fleet's plan begins with the theft of a prototype Gundam armed with a nuclear weapon. Attempting to recover the stolen Gundam, Federation test pilot Kou Uraki is drawn into this new conflict.  Kou and his commrads face many battles trying to recover the Gundam.  Battle after battle, Kou gains experience until he faces his nemesis, ace pilot Anaval Gato.  Will he have the skill to beat his opponent and be able  to return the Gundam?