After being seriously injured by the Nephilim, Hibiki is unable to control her Symphogear. She flies into a rage, destroying the Nephilim and ripping out its heart. During the post-fight medical exam, it`s discovered that if she continues to use her gear, she`ll die.

The Moon is going to crash into the Earth, and there is no way to stop it. Finé's plan has been to raise the floating continent of Frontier in order to survive, but they lack the needed technology. They attempt to make a deal with the American government, which betrays them instead. Ver`s Noise intervene to save them, but Hibiki is nearby, and she`s forced to transform to survive.