Assisted once again by the crew of AWACS SkyEye, Mobius One is assigned to destroy the military capability of "Free Erusea", a resistance organization that formed after the conclusion of Ace Combat 04.
Yang sekali lagi dibantu oleh kru AWACS SkyEye, Mobius 1 ditugaskan utnuk menghancurkan kemampuan militer "Free Erusea", sebuah gerakan pemberontakan yang dibentuk setelah akhir Ace Combat 04.