Reunion
From their guerilla allies, the 08th MS Team learn that the rebuilt Apsalus has begun another round of testing at a remote desert firing range. Shiro and his team stake out the test site in an attempt to capture the enemy mobile armor. The Apsalus escapes with Shiro's Gundam clinging to its hull, ultimately crashing in the Himalayas.

Stranded in the icy peaks, Shiro and Aina must once again help each other survive. But their growing closeness comes to an end when their respective allies arrive to rescue them. And, to make matters worse, both young warriors are now suspected of treason due to their relationship.

Shuddering Mountain
The 08th MS Team are sent back into the field to search for the secret base where the Apsalus is being developed. In the process, they encounter some retreating Zeon soldiers who hope to use Ginias's research base as an escape route back to space. Ginias, intent on completing his work, blows up the refugees on the base's threshold and inadvertently reveals its location.

With the base finally located, the Federation Forces mobilize for a full-scale assault, and the entire Kojima Battalion is deployed to assist in the siege. But just as the base's defenses crumble, Ginias and Aina enter the battle at the controls of the completed Apsalus. Now Shiro and Aina must face a final choice between loyalty and love...

Last Resort
Months later, the war has ended and Michel has left the Federation Forces. Together with Kiki, he embarks on a voyage into the wilderness to search for Shiro and Aina. Might they have survived the battle on the Tibetan plateau? Or has their love ended in tragedy?