Resources are few in the barren wilderness, and survival is the top concern. Essential supplies are transported by a network of zeppelins, with mercenary crews operating single-engine fighter jets providing defense. In the face of pirates and political instability, these valiant aviators serve as the last line of defense for security in such desolate places. Kylie, a brilliant and hotshot pilot, is a member of one such crew: the Kotobuki Squadron. Emma, her childhood friend, recruited her to the club, and her inherent knack for flight makes her a valuable member. The six-member squadron is recruited to safeguard people, goods, and society as they continue to face difficulties in their complicated environment, armed with their Hayabusa fighter jets.