Several decades after the First Space War, humanity and the Zentradi have forged lasting peace, spreading human culture throughout the galaxy. Young aviator Isamu Alva Dyson is thrilled to contribute to United Nations Spacy's next‑generation fighter, under construction on his native world Eden in the orbital assembly line that spans several moons. Yet he must contend with former classmate and love rival Guld Goa Bowman, who also works on the project.
As Isamu and Guld keep sparring, the famed AI idol Sharon Apple holds a concert, managed by their shared former flame Myung Fang Long while fans worldwide cheer for the future of interstellar flight. Rekindled feelings threaten to unravel everything the three have built.