In the great city of Metropolis, severe community structures and prejudice dominate a world where humans and robots live together. Unrest and violence increase with each new day. Searching for the scientist Dr. Laughton, suspected to violate human rights by trading organs, the Japanese detective Shunsaku Ban and his nephew Kenichi arrive at Metropolis. In the scientist's laboratory, Kenichi discovers a girl without any memory of her past life. He decides to help her, so they run away together. His uncle follows him and penetrates the dark secrets of the city to find Duke Red, the man ruling from the shadows. Meanwhile, Kenichi desperately tries to protect the mysterious girl from the people hunting her. However, Duke Red and his adoptive son have their own deep reasons for chasing the girl. These reasons are connected to her true identity and the struggle for the domination of Metropolis...

Tsubasa Kazanari and Kanade Amou—the idol duo known as Zwei Wing—use their songs to power ancient weapons known as symphogears to combat a deadly alien race called the Noise. While the general public is aware of the Noise's existence, knowledge of the symphogears are kept a secret. When the Noise attack one of Zwei Wing's concerts, Kanade sacrifices herself to protect a young girl named Hibiki Tachibana, leaving Tsubasa devastated and a fragment of her symphogear embedded within Hibiki. Two years pass and Hibiki is once again dragged into a Noise attack. While rescuing a young girl who has been left behind during the evacuation, she awakens the power of Kanade's symphogear lying within her. Although Tsubasa still grieves over the loss of Kanade, both girls must now learn to work together using their powers to defend humanity against the Noise.

Living at a shrine with other orphans, Ouri Kagami is no stranger to corpses. But when he sees the patron of his orphanage, Keisei Tagami, seemingly revive the scarred corpse of schoolgirl Makina Hoshimura, he cannot help but feel incredibly shocked. Intrigued by the mysterious circumstances surrounding Makina, he learns that she is a Shikabane Hime—an undead being tasked with eliminating others like her who pose a threat to society. As Ouri goes about his daily life, his inexplicable run-ins with her are shrouded in abnormality. But as each encounter grows more intense, the two are brought closer together, and it may be their intertwining fates that hold the key to unveiling the secrets behind the world of Shikabanes.

Driven by conflicting interest groups, the anti-magic movement is gaining dangerous momentum. Warned by the Yotsuba family, Tatsuya Shiba takes countermeasures to foil the plans of crooked politicians and corrupt journalists. He repels the first attack, which framed First High School as an unofficial venue for military education, but his most formidable enemies have yet to act. If Tatsuya wants to preserve his peaceful life with his sister, Miyuki, he must demonstrate once more that no one in the world can outsmart him.