With the port of Antwerp destroyed, Operation Southwind is postponed and the 501st transfer to their new base with Shizuka officially introduced as their newest member. During a training session, Yoshika's Striker Unit fails and upon examination, it is discovered that her magic output is unstable since she regained her powers. Shizuka becomes uneasy with Yoshika's situation and wants to help her, despite not knowing how. Soon after, Minna dispatches the 501th Unit intercept two Neuroi, except for Yoshika and Shizuka...