"The Iron King" is a fantasy novel by Julie Kagawa, published in 2010. It follows the story of Meghan Chase, a sixteen-year-old girl who discovers she is the daughter of Oberon, the King of the Faeries. As she embarks on a quest to rescue her kidnapped brother, she navigates the treacherous world of Faery and encounters various mythical creatures. Throughout her journey, Meghan is joined by Puck, a mischievous faerie, and Ash, a brooding prince of the Winter Court. The novel explores themes of identity, loyalty, and the struggle between the human world and the magical realm, setting the stage for an epic adventure.