Kidô senshi Gundam Cucuruz Doan no shima

The Earth Federation Forces, riding on the momentum of their successful defense of Jaburo, have launched a major counteroffensive operation to capture Odessa, the headquarters of Zeon’s Earth Invasion Force. The White Base, with Amuro aboard, is headed to Belfast for a final resupply before to the operation. On the way, the White Base is assigned a special mission to mop up enemy remnants on an uninhabited island, known as the “Island of No Return.” Amuro and his comrades set out to search for remnant operatives, but all they find are children who shouldn’t be there, and a single Zaku. After losing the Gundam in battle, Amuro encounters a man who calls himself Cucuruz Doan. Will Amuro be able to uncover the island’s secrets, find his lost Gundam, and escape in one piece? (Crunchyroll)