Cait is a human princess born to King Henry vii and Queen Katherine of Ireland. At 17, she learns of the true world she is to rule. She is betrothed to a man that is not a man but a vampire. Her life takes on more than just being ill growing up as she falls in love and finds out the mistake that was made. She must live with and understand that everything she thought she knew growing up was not what it seemed. None of her life was as simple as being a sick princess with many to love her.