In the UC0097 period, after the dispute of the "Laplace Incident" ended, two Unicorn Gundams were secretly sealed, and the remnant of the Neo Zeon "Armband" also disintegrated. Just as humans gradually emerged from the shadow of the war, the Unicorn Unit 3 "Phoenix" that had been missing for two years suddenly appeared. It immediately triggered a hunt among the Earth Federation Army, the remnant of the Zeon Armband, and the Luou Chamber of Commerce, and a cosmic showdown was about to begin...