Karin is just an average middle school student. She has terrible grades and is a poor athlete. She lives alone with her aunt after the death of her parents when she was young. But after the death of her beloved cat Shii-chan, her luck changes. Karin soon discovers that her only inheritance from her mother, a mysterious pink ring, can help her transform into a little goddess with the help of the goddess Athena. Soon after, she begins to befriend others with rings like hers; trying to solve the mysteries surrounding their lives.
