The story tells about a seventeen-year high school student named Kana. She is a music lover and spends her entire day surrounded by girlfriends: Mossan, Hijiri and Pets. Her life would have been the same boring and monotonous, until one day the robot with Haruko herself fell from the sky! Our Miss Calamity wants to draw Cana and her friends into the muddy story associated with some entity known as Atomsk. Without having any choice, our heroine risks everything and hits hard. And this crazy story is just beginning!