Fleeing their homeland from the oppressive Zai, Kei Narutani and his friend Song Minghua find refuge in Japan after a miraculous encounter with a red aircraft. Kei's curiosity about the plane leads him to Gripen, a girl who controls the extraordinary JAS-39F fighter named Gripen. As Kei aids Gripen in her flying challenges, they are enlisted by the Japan Self-Defense Force alongside the easygoing Eagle and the dignified Phantom, both unique aircraft like Gripen. United, they stand against the Zai, battling to safeguard humanity from the alien threat in a desperate struggle for survival.