Aseo the Tarnished's search for more Great Runes brings him to the sorcery academy of Raya Lucaria, where the headmistress is none other than Ranni's mother, Queen Rennala! Ranni asks Aseo to claim her mother's Great Rune without killing her. However, when Aseo sets foot in the Grand Library of Raya Lucaria, he finds that the Queen of the Full Moon isn't quite what he expected. Soon, he's caught up in another frenzied fight?with a conclusion nobody could ever see coming! New friends, familiar faces, action, adventure, and cats(?)-all await Aseo as he starts on a quest for treasures galore!