"The Iron Queen" is the third book in the Iron Fey series by Julie Kagawa. It follows the journey of Meghan Chase, a half-human, half-fey girl, as she navigates the treacherous world of the Nevernever. In this installment, Meghan faces new challenges and powerful enemies, including the formidable Iron King. As Meghan embraces her role as the Iron Queen, she must confront her destiny and protect her loved ones. The story explores themes of loyalty, sacrifice, and the struggle between the fey and human worlds, while introducing new characters and deepening existing relationships.