Following a devastating Lunar Attack that nearly annihilated Earth, Hibiki Tachibana, Tsubasa Kazanari, and Chris Yukine persist in their fight against the Noise, a enigmatic alien menace, utilizing formidable suits of armor called Symphogear. Having successfully safeguarded an American convoy from a Noise onslaught, Hibiki and Chris race to the Queens of Music hall to attend one of Tsubasa's breathtaking concerts. Concurrently, Tsubasa and fellow rising star Maria Cadenzavna Eve dazzle the world with a sensational performance that is broadcast globally. However, as the concert nears its culmination, a swarm of Noise unexpectedly invades the venue, causing pandemonium. Amid the chaos, Maria, as the successor of Chris' former mistress, Finé, proclaims war on the world, accompanied by Kirika Akatsuki and Shirabe Tsukuyomi, who disclose their own Symphogear abilities. Following an altercation with Tsubasa and her comrades, they inexplicably withdraw, leaving the trio bewildered and questioning their intentions.