Set a few days before the initial outbreak of the Kansen Virus in the Tohoku region of Japan. Shibue Akira, Suda, Ashina Rui, and Kiyohara Riri are on their way to the Summer training camp facility where they are training for the sport's nationals hosted in Autumn. The Summer training camp will also be hosting participants from other schools located in the Tohoku region. On the way there, they see an abandoned car which is only one of the mysterious events leading up to the survival of their lives from the people infected with the Kansen Virus.