Corruption grows within the Stones of Luna, jeopardizing all the Lands of Lunamoor. Harlow is safe in the Kingdom of Shadows, nursing her jagged heart but avoiding her sister. Sensing her reluctance to mend fences, Shade gives her a time limit to put herself back together and step up to become the warrior she's always meant to be. But when Bloom returns, bearing an urgent message, Harlow has no choice but to put her grievances aside and learn to harness her magic once and for all. Desminda stands at a crossroads, a throneless queen who can fight for her people or slink away into exile, losing her birthright and everything she's ever known. When she learns of the corruption seeping into Thornewood, she realizes she can't reclaim her throne alone. Together, Desminda and Harlow will travel the lands seeking allies to force Thornewood's usurper into submission, but greater forces are at play, sundering their partnership, leaving Harlow at the mercy of witches, and Desminda to gather allies using only her charm and wits. But not everything is as it seems, and when Harlow reunites with her people, she returns fit, hale, and hardened into someone unrecognizable, her newfound power clinging to her like a shadow. The only question now is will Harlow fight for Thornewood or has someone influenced her into fighting for something more, something that might destroy Desminda and her queendom once and for all?