While Rena and Maki recover from their injuries, the other members of SORD head abroad for a school trip. Just moments after their arrival, however, the Mihama gang is pulled into a hunt for a defector from the SORD, aided by student Sylvia and Velvet from St. Aile's International School. Tohka is the star of the show this time around, but she's struggling with issues of her own - old memories of her parents and a promise to a friend she hasn't been able to keep...