When the Japanese government hands control of the air force to civilian organizations, several companies decide to place their aspiring idol singers in front of fighter‑plane cockpits. Among these groups is Hummingbird, a five‑woman team composed of the Toreishi sisters, Satsuki, Uzuki, Yayoi, Kanna, and Miina. During a recording session, video director Kudo spots the girls’ potential and steps in to guide their debut music video, aiming to launch them to the top of the charts.