While Ichika Orimura is away at an outside lab, an unknown attacker hacks the core of IS Academy and cripples its systems. His instructor Chifuyu sends in the pilots closest to him, Houki Shinonono, Cecilia Alcott, Huang Lingyin, Laura Bodewig and Charlotte Dunois, to fight the intrusion from inside the network. There a program called World Purge traps each girl in a fabricated reality built around her ideal version of Ichika, and on returning he has to break them free. This OVA accompanies the second Infinite Stratos season.