Odile's father, a vengeful sorcerer, has raised her for a single task: infiltrate the royal palace and steal the king's crown, an artifact with enough power to restore the magic stolen from her kingdom. But to enter the palace, she must assume the identity of a noblewoman. She chooses Marie d’Odette, famed for her beauty, a rumored candidate for future queen… and Odile’s childhood-friend-turned-sworn-enemy.

With her father’s help, Odile transforms Marie into a swan and takes her place at court But when the king is brutally murdered and Odile’s brother is accused, her plans are thrown into chaos. Desperate to free her brother, Odile is forced to team up with none other than Marie… the girl she cursed, and the girl she cannot stop thinking about.

To make matter worse, there are whispers that the king’s murder was not at the hands of a man, but a beast. Torn between loyalty to her father and her growing feelings for Marie, Odile becomes tangled in a web of treachery and deceit. To save her kingdom, she must find the true path to magic and uncover the real killer before they-or it-strikes again.