Johnny Ridden survived through the fierce battle of A Baoa Qu although his MS-14B Gelgoog High Mobility Type was badly damaged by the FA-78-1 Gundam Full Armor Type's overwhelming firepower. With the aid of a comrade, he reached a Dolos-class carrier where he was reunited with his MS-06R-2 Zaku II High Mobility Type, which was modified by a mechanic and nicknamed the MS-06R-2 Zaku II High Mobility Type "Full Bullet Zaku".

Universal Century 0153. During the war between the League Militaire and the Zanscare Empire, Uso Ewin while alone on a reconnaissance mission happens upon the Zanscare Empire's Newtype squad, and finds himself blind-slighted by a Zoloat, and comes under attack by the mysterious Mobile Armor Zong. However he finds himself rescued by an old junk dealer Grey Stoke. The pilot of the Zolat, who was also rescued alongside Uso is revealed to be a young girl named Kamui Gian.

The series consists primarily of short vignettes detailing the adventures of the Crossbone Vanguard space pirates three years after the original manga.
The first story is set during the One Year War and deals with a young Umon Samon. The series also features the "return" of Grey Stoke, an aged Judau Ashta under an alias, who first appeared in Hasegawa's Mobile Suit Victory Gundam Side Story manga.