Many years have passed since the ALLTYNEX incident and humanity’s resettlement of the Earth. The world’s nations have joined to form a unified economy and a global militaristic government. However, in opposition to the worldwide mass oppression, a resistance organization arose: Valkyness.
The decades long conflict between the Global Unified Army and Valkyness is suddenly interrupted when an alien force arrives seeking vengeance on humanity for atrocities inflicted upon their people.