 In the first mission, the Strike fighter pilot is sent to destroy the Kaisertian's flagship Indra, which obliterated a human colony on Mars and although the operation was a success, Earth still fell under control of the Kaisertians and as such, it prompts the Strike fighter and the Earth Defense Force with returning to Earth and counterattack the Kaisertian operation center established in Tokyo, which is under attack by a Kaisertian capital ship named Guardian.After completing the second mission, the Strike fighter and the defense forces proceed underground, where the Kaisertian's main base is located but they are quickly ambushed by one of the alien's fighter ship known as Bug.Once the ship is destroyed, the Strike fighter's final mission is to destroy the core of the Kaisertian base.