Mio progresses in perfecting the true Reppuzan, but it drains much power from her. After Minna proposes an operation to attack a Neuroi base, the top brass send in Captain Hanna Marseille of the 31st Karlsland Luftwaffe Storm Witches to join the mission. Since Barkhorn and Hanna don't get along, Erica volunteers to accompany her on the mission. After fooling around in a training session, Hanna and Erica are ordered to stay in a room together to learn to cooperate. Hanna is obsessed with winning, and has always wanted to settle things with Erica, whom she views as her equal, but as of late she is annoyed with Erica's lack of competitive spirit. But when Hanna badmouths Barkhorn, who wanted an autograph for her sister, Erica agrees to compete with her during the mission. When they reached a draw after destroying the Neuroi, they have a tiebreaker dogfight, also ending in a draw. Before she leaves, Hanna decides to give the autograph.
ネウロイとの戦いが激化していくなか、最終決戦に備えた戦略としてネウロイに占領された島を奪回するよう軍司令部からウィッチーズに指令が下った。島への突入には奇襲攻撃をしかけるため、2人のウィッチを選ぶ必要があるのだが…。
Mio avanza en el perfeccionamiento de la Verdadera Reppuzan, pero drena tanto poder de ella. Después de Minna propone una operación para atacar una base Neurol, el envío de la parte superior de latón en el capitán de Hanna-Justina Marsella del 31 brujas Karlsland Luftwaffe de tormenta para unirse a la misión.
