Beginning four years after the one year war, 0083 starts with the arrival of two new Gundam units to be used for gravity testing. Things take a turn for the worse when members of Zeon steal Unit 2 and the nuclear warhead it that it has been armed with. Young test pilot-in-training Kou Uraki, piloting Gundam Unit 1, must now capture the stolen Gundam before it can be used to fulfill Zeon's mysterious "Operation Stardust".
Okajima Rokuro is a small-time salary man who is carrying documents for his company, when the ship he's traveling on is attacked by pirates. Kidnapped, he discovers to his dismay that his employers' main concern is to ensure the documents don't get into the wrong hands, even if it means sending the carrier to the bottom of the sea. Now, with his former life ruined and his kidnappers seeming comparatively friendly, "Rock" decides to join their merry band of mercenaries, and sets out with a new career to the shadier corners of the South China Sea.