Zen, a Vampire Prince, lives in the human world, hiding his identity by disguising himself as human. He is a perfect Prince for his people. His eyes is cold for criminals and his eyes is soft for the innocents. Girls falls head over heals for him, but his heart is already set for one woman, Rose. Rose, a Fay Princess, ran away from the Mistical World with two vows at her heart. One, that she is to protect Zen and two, she definitely is never going to fall in love with the Vampire Prince. Responsibility is Zen's top priority. Promises are Ross's top priority. Rise has a secret. A secret that can destroy them all. What will happen when the two cross paths?