Kazanari Tsubasa and Amou Kanade formed the legendary idol unit known as Zwei Wing. They use their songs to power ancient relics used as Symphogear to fight Noise - creatures of unknown origin against which conventional weapons do not work. Humans are familiar with the existence of the Noise, but knowledge of the Symphogear is kept strictly confidential. One day the Noise attack one of Zwei Wing's concerts.
