Life appears to drift by for Kana Koumoto and her friends in their small Japanese town. Each day mirrors the previous one, creating a sense that every new day will be identical. Kana attends school, spends time with her friends, and enjoys painting her nails and listening to music, yet it feels as though nothing special will ever occur. Seeking a change of pace, Kana and her friends decide to design a bottle rocket and launch it into space, despite the likelihood that it might not reach its destination. However, just as the rocket is completed, a robot suddenly crashes into and destroys it, shortly followed by a pink-haired woman claiming to be a "Galactic Investigator." Kana's life quickly becomes more exciting than she ever imagined, involving new feelings, changing friendships, and even boy troubles. It turns out life can pass in the blink of an eye, fast enough to even miss it, so what's with these weird robots that seem to show up at the worst times?!