The film centers on You, a contemporary Japanese high‑schooler who aspires to be a musician but faces parental opposition and internal band tensions. While strolling through Shibuya, he hears a frantic plea for help; suddenly a blinding white glow surrounds him.
Across the galaxy, the planet Meguriboshi teeters on the edge of war over a vital energy source called "Hoshichi" (Star Blood). Just as the warring factions prepare a cease‑fire, a colossal field of orbital debris crashes down, threatening catastrophe. Laco, an eager young mechanic, rushes to support the planet"s defense forces but ends up in peril. As she loses consciousness, her mind links with You"s, initiating their shared destiny.
