Kana Koumoto and her friends' lives in their little Japanese village appear to float by. Every day is the same as the previous, and it appears that every new day will be the same. Kana goes to school, hangs out with her friends, and enjoys painting her nails and listening to music, but she has the impression that nothing remarkable will ever happen to her. As a change of pace, Kana and her pals plan to build a bottle rocket and launch it into space, despite the fact that it may not reach its destination at all. However, just as the rocket is about to be launched, a robot crashes into and destroys it, followed by a pink-haired lady claiming to be a "Galactic Investigator." Kana's life swiftly gets more complicated.