Living in space is magical . . . Rhae is a high school girl who is very curious about astronomy -- about the whole world. She has always been fascinated by what is above the sky, dreaming of going to space. What if she met a boy who has the same interest as her? And then suddenly, she had the chance to be in space using a spaceship with him? A cute adventure, exploring things in the world, and clueless thoughts about this unknown universe.