In the city of Kamihama, magical girls find an unexplained salvation, drawing amnesiac Iroha Tamaki to its streets. Desperate to recall why she became a magical girl, Iroha learns that rumors here materialize into physical threats. She soon meets Yachiyo Nanami, a veteran magical girl protecting Kamihama, and they forge a fragile alliance. Iroha is searching for her younger sister Ui, whom no one else seems to remember. As they investigate mysterious disappearances, they are joined by Felicia Mitsuki, a reckless girl holding deep grudges against Witches, and Sana Futaba, an invisible girl who found acceptance within Yachiyo’s household. Together, this makeshift family uncovers a chilling truth: Kamihama is controlled by the Magius, a secretive faction led by young magical girls seeking to liberate all of their kind from the cruel fate of becoming Witches.Led by Nemu Hiiragi, Touka Satomi, and Alina Gray, the Magius operate under the banner of the Wings of the Magusa. They use a sinister device called the Embryo to harvest Grief Seeds and forcefully "save" magical girls by stripping away their humanity and rewriting their souls. As the stakes escalate, Iroha discovers a devastating revelation: Nemu and Touka were her
childhood friends, and their experiments to save Ui from her fading existence inadvertently triggered the chaos enveloping the city. Furthermore, Ui herself has been fused into the very architecture of the Magius’s grand design.Simultaneously, the original timeline’s legendary magical girls—Madoka Kaname, Sayaka Miki, and Mami Tomoe—arrive in Kamihama. Mami is brainwashed by the Magius, adopting the ruthless persona of Holy Mami and turning against Iroha's group. A massive war erupts between the Magius and the allied magical girls, who reject a salvation that requires sacrificing individual autonomy and lives. Friendships are tested in brutal battles as the true nature of the Walpurgisnacht and the Ultimate Witch threatens to annihilate Kamihama.Amidst the chaos, Iroha confronts her friends Nemu and Touka, pleading with them to halt their destructive crusade. The emotional confrontation breaks the Magius's grip, and the girls work together to redirect the catastrophic energy of the looming disaster. Although Ui is finally rescued from her state as the Doppel-generating core, the city is left devastated, and the true cost of their rebellion becomes starkly apparent. The magical girls must pick up the pieces, forever changed by the profound sacrifices made in their quest for truth, identity, and freedom from their inescapable
tragic destiny.