"Princess Caroline... you are my destined mate." Royalty in the Acasia Kingdom is discerned by their gold and silver hair, and elegantly blue eyes. However, the third princess Caroline, born with amber hair and black eyes, is considered a shame for the royal family. She has been locked away in a small villa, being made to do petty work that the maids normally do. One day, her father calls for her... and suddenly Caroline finds herself in the audience of Prince Lienhart, prince of the beastfolk of Toscarna. With his bright white ears and waving tail, he calls to her in excitement. It seems she is to be betrothed to him as his mate?!