Now, once again, we are heading for the vast blue sky. The boy who yearns for the sky and sets his sights on the Star Island and the mysterious blue-haired girl who descends from the sky become a community of destiny and life. The boy and girl who set out for the sky meet their trustworthy companions and the airship that is heading to their destination. By avoiding the pursuit of the Empire and encountering the Star Crystal Beast, the two deepen their bond and gradually grow. But the journey to the Star Island is only halfway through. Together with their companions, the boy and girl set out for the next journey.