Amate Yuzuriha is a high school student living peacefully on a space colony in space. When he meets a war refugee named Nayan, Amate is drawn into the illegal mobile suit-matching game “Clan Battle”. Under the pseudonym “Machu”, she pilots GQuuuuX and engages it in fierce battles day after day. Then an unknown Gundam Mobile Suit, pursued by both the Space Force and the police, appears to her with its pilot, a boy named Shuji. Now their world is at the beginning of a new era.