Fighting for the anti-occupation guerrilla group Hinukan, Ibuki Chinen opposes foreign forces occupying Japan. He engages in combat against Oceanian troops and confronts challenges posed by North American Coalition (NAC) forces. During Hinukan's operations, veteran MAILeS pilot Jin Misawa provides crucial support against NAC opposition. In a pivotal battle against NAC pilot Grady Ellison, Jin Misawa falls in action, succumbing to sustained injuries. Despite this loss, Ibuki Chinen survives the clash with NAC troops. Following the conflict, Ibuki Chinen prepares for subsequent guerrilla activities, indicating continued resistance involvement.