After her betrothed deceives her and her own relatives trade her away, Lena is rescued by Selina, the formidable mother of the man who abandoned her. Bound to the Queen through a private agreement, Lena uncovers a haunting likeness to Selina's late wife, treachery inside the royal council, and the power of her dormant Luna heritage. Is she merely filling a ghost's place, or was she always meant to stand at the Queen's side? Those who broke her will face the reckoning.