A mysterious enemy has struck simultaneously in Japan and London, where Tsubasa is performing a concert. Their power is even greater than that of the Symphogears, and they want to destroy the entire world.

With most of the Symphogears destroyed, it`s up to Hibiki to fight the Autoscorers. But she`s scared of hurting someone, and can`t sing. Will she be able to find the will to fight?