After successfully repelling a Neuroi invasion in Romagna and eliminating the foe's nest above Venezia, Yoshika Miyafuji returns to her hometown in the Empire of Fusou. Despite losing her magical and healing powers, the ex-501st Joint Fighter Wing officer aspires to pursue medical studies to aid civilians and soldiers alike. An esteemed European school extends an invitation to her, prompting Yoshika to embrace this opportunity and set off to the war-torn continent. However, a fresh crisis emerges as Neuroi breach human defenses, infiltrating safe zones and disrupting Europe's equilibrium. Struggling with her grounded status, Yoshika finds herself torn between duty and her inability to pilot a Striker Unit. With her comrades in jeopardy, she faces a pivotal decision in a time of escalating danger.