A young runaway named Asuta Jimon has a chance encounter with a young girl while wandering the streets at night. Little does he know this cute little girl, Hoshimiya Kate, is really the leader of Zvezda, an organization bent on world conquest. Taking her talk of world conquest as a simple flight of fancy Asuta walks with her and plays along to an extent. He soon realizes the import of her words when he is confronted with a swarm of dangers and strange happenings.