A solitary island in the South Sea occupied by the Oceanian Army. The North American Allied Forces assaulted the island, which was a strategic point on the sea route for the Oceanian Army. After annihilating the Oceanian forces stationed on the island, the North American forces attack the resistance organization with their momentum.

It was the unknown AMAIM who saved Hinukan from the predicament of being attacked by the North American army. Chinen Ibuki and all the Hinukans, equipped with supplies brought in by their pilot, Jin Misawa, face the battle against the North American army.