Miho Nishizumi, a girl from a prestigious family of sensha-dō practitioners who became traumatized by a past event, transfers to Ōarai Girls High School to get away from sensha-dō, as she presumed the school was no longer practicing the sport. However, shortly after Miho begins her new school life and makes some new friends, the student council announces the revival of sensha-dō at Ōarai and coerces Miho, the only student with prior experience, to join. While reluctant to join at first, having