Following the story of Erica Hartmann, this tale details her early years spent training in the JG52 alongside other powerful witches like Gertrud Barkhorn and Adolphine Galland. When a Neuroi invasion plagues Europe, witches from Karlsland and Britannia team up to defeat the enemy. This is considered a character-focused prequel to the famous Strike Witches series.

(Source: The Misfits Squadron)