Twelve years ago, Charity became a slave. Her mother sold her and her two sisters, Hope and Faith, and then disappeared. Since then, Charity has been searching for a way to escape the desert city where she is held captive, but she is no closer to leaving her master's inn behind. But when a traveler named Tress arrives from a land of water and the inn is consumed by fire, the three sisters are engulfed in a quest to stop the dark fey Irudipen from consuming the world in dragon fire. Guided by Tress and pursued by dark beings bent on the world's burning, Charity and her sisters search for a way to defeat Irudipen and the dark forces he commands.