In a war between Zeon and Earth Federation, a stolen prototype Gundam vanishes. Years later, a girl with mysterious abilities finds herself piloting a new Gundam in underground mech battles while searching for answers about her powers.
The Principality of Zeon is at war with the Earth Federation. On September 18, 0079, Zeon's Lt. Commander Char Aznable leads a raid on space colony Side 7. There, he discovers the Earth Federation's new weapon, the RX-78-2 Gundam, abandoned. He then decides steal it for himself, setting in motion a domino effect that forever changes history as we know it. Five years later, on independent colony Side 6, a young Newtype girl finds herself caught up in the hunt for the missing RX-78-2 Gundam. Before long, events conspire to put her in the pilot seat of the new prototype Gundam GQuuuuuuX and taking part in underground mobile suit fighting competitions. Surrounded by new friends, she attempts to understand her strange powers and find her place in the world dreaming of skies where she can fly free.