In Europia 2017 ATB, the Europian Union’s line of defense has been gradually falling back against the Britannia Empire’s overpowering invading forces. Clearly facing defeat, the E.U. army forms the Assault Unit wZERO. Pilot Akito Hyuga joins the wZERO unit, a Nightmare team composed only of E.U. reservists and Japanese youths. With former Britannian nobility Leila Malcal as commanding officer, they are thrown into a reckless operation with a minimal chance of survival.