The city of Norone has been captured by the machine forces of the UBM. Their capture of the city was swift and unexpected, and now Myeran forces within the city can no longer be contacted. In order to find out how this occurred, the 78th, 79th, and 80th Vanguard Divisions have been dispatched to survey the city and report back to high command. For her first deployment, Avril is unsure whether she'll survive.