While Rena and Maki recuperate from their wounds, the rest of the SORD team flies overseas for a school excursion. Almost immediately upon arrival, however, the Mihama group is drawn into a pursuit of a SORD deserter, with help from student Sylvia and Velvet of St. Aile's International School. Tohka takes center stage this time, yet she is grappling with personal troubles—faded memories of her parents, and a vow to a friend that she failed to honor...