While Rena and Maki recover from their injuries, the other SORD members jet off overseas for a school trip. Within moments of their arrival, though, the Mihama gang are pulled into a manhunt for a SORD deserter, assisted by students Sylvia and Velvet of St. Aile's International School. Tohka's the star of the show this time round, but she's wrestling with her own issues ? old memories of her parents, and a promise to a friend that she wasn't able to keep... “You're right. There's a reason we need to get back... even if it means crawling home on our hands and knees.” “Let's meet up again someday... if we're still alive.” And introducing Sengoku Ayame - Sengoku Ichiru's brother, and a handler at St. Aile's: “If takin' her in alive's too much of a challenge, just get rid of her - I don't give a damn. I wanna see this mess cleaned up.” What answers will Tohka find? She has the truth in her sight...