Abydos High School, Abydos Foreclosure Task Force Inside a train, a bleeding girl asks a mysterious man for his help to avert disaster. At the academy city of Kivotos, the city is still recovering from the chaos following the disappearance of their leader, the General Student Council President. At the Abydos District, the five remaining students of Abydos Academy, Hoshino Takanashi, Nonomi Izayoi, Serika Kuromi, Ayane Okusora and Shiroko Sunaookami, who are also members of the Abydos Foreclosure Task Force, not only deal with desertification affecting their school, but also paying off the school's massive debts and repelling attacks by the Kata-Kata Helmet Gang. One day, Shiroko helps a man who got lost and brings him to school...