He is a vampire,Known as Cold Prince. She is a human,but unexpectedly, warmed his heart. Both from different world, but saving her from any danger is what he promised himself. Will She know his ever dark secret?

They met online with a broken heart. Unknownly, Fate bring them together through a event. Bickering,yet they have to act like a couples in order to win some competition. When They thought they won't be able to see each other again, fate bring them together, once again. Will they able to identify each other?