Zero crashes onto Amatera, a planet torn apart by war, with no memory of her past or of who she is. The fighting pits a local resistance against the forces of the Gevuran empire. There she meets Ring, a charismatic young leader determined to save their world. As her sense of self gradually returns, Zero learns she is not an ordinary girl at all but a Galverse, a cosmic being tied to something much bigger than a single planet. The galaxy's past lends weight to that discovery: its peace once rested on a sacred star called the Mother Planet, which exploded and vanished. The Galverse were born from its scattered fragments, and as these gifted girls confront the villainous Space End Society, they begin to uncover what really caused that collapse. The result is a science fiction adventure of war, identity and cosmic mystery.