Eleanor Ashvane thought graduation would finally give her freedom. Instead, a mysterious summons takes her to the Alpha King's palace, where she discovers the impossible: the king's four sons are her fated mates. Drystan is a ruthless bully who seems determined to break her. Torin is a cold warrior whose protection feels dangerously close to control. Lucan hides deadly secrets behind a charming smile. And Rook is the unpredictable prince Liora can never quite understand. But four mates are only the beginning. Her father's death conceals a terrible secret, the royal succession is collapsing, and someone inside the palace is manipulating the kingdom from the shadows. Then Liora discovers why she was summoned. Only her blood can awaken the legendary Moonheart. And when she uncovers the truth about her father's death, she realizes the murderer isn't hiding somewhere in the kingdom. He's sleeping under the same roof. He's one of her four mates.