After being overshadowed by her beautiful sister, Lady Cordelia is betrayed by her family and former fiancé. Giving up on love and marriage, she unexpectedly finds favor with the second prince, Leonhart, who becomes completely enamored with her. Leonhart, who has a strong ancestral connection to a lion spirit, is inexplicably drawn to Cordelia, comparing her to catnip. While Cordelia initially rejects his advances, her sister's sudden pursuit of Leonhart forces her to reconsider. This is a story about a lady who finds herself captivated by a prince who can transform into a beast.