The story is set after the Federation defense of Jaburo, with the Federation planning to renew offensives on Zeon's invasion headquarters in Odessa. Amuro and the White Base head to Belfast to resupply, but the White Base receives new orders: to head to the "Island of No Return" to search and destroy any Zeon stragglers.

The story begins with several Federal mobile suits fighting a losing battle against a single Zeonic Zaku.

Remake of Episode 15 of Mobile Suit Gundam.