During the One Year War of UC 0079, A young Earth Federation Lieutenant named Shiro Amada is sent to Earth to lead a squadron of Gundam mobile suits in Southeast Asia to fight the Duchy of Zeon's forces. Along the way, he and his rag-tag 08th Mobile Suit Team discover that Zeon has been testing a new secret weapon capable enough to destroy the Federation's headquarters in South America and possibly give the Zeons an edge in the war. Shiro unknowingly meets the pilot of the Zeon secret weapon, Aina Sahalin. Together they discover that both sides fighting the war are not any better or any worse than the other.