Journeyman Sanna's aerial rug and her magic belt-bag make her the ideal courier for the Sisterhood of Sorcery, but she chafes under the burdens of obedience. When she discovers a plot to steal power gems from the Isle of Jewels, she's the obvious person to fetch them back. River gypsies, a pregnant princess, the Empress of the Isle of Jewels, and the priest of the Fire God all play a part in her greatest adventure.