Karin Hanazono is an orphan who lives with relatives and struggles with academics and sports, feeling largely miserable. She keeps only a ring from her deceased mother as a cherished memento. While mourning her pet cat, Shii‑chan, she encounters a strange boy named Kazune Kujyou. That meeting sparks a series of mysterious events that reveal Karin is a little goddess. As her powers grow, she meets others like herself and begins to understand her true identity, only to find herself beset by opponents.