Join little Persephone for an adventure in this sixth Little Goddess Girls story. Persephone, Artemis, and Aphrodite are on a quest to save their fellow Little Goddess Girl, Athena, from the evil King Hephaestus. It turns out the king has turned Athena (and her dog, Oliver) into treasures, and have hidden them in a massive treasure room. The girls only have seven guesses as to what and where exactly they are—before their friend is stuck forever!