He came from the darkest part of seoul which no one ever knew. Lurking around in the city searching for a single soul to quench his thirst is what he do. But what if he met with someone interesting not because that someone was too hard to resist but because every time he sees that person, his heart started to beat again...       What will happen to him? What does the heartbeats mean?

A decade ago, there's a prophecy saying that one day, the son of the devil will be born. It was said that the curse prince would bring misfortune to the country. "The prince should be kill once he was born." That was what all the people in the country thought. If the prince was let to live, their live will be in danger and they didn't want that to happen. The curse prince is said to have a tattoo on his left arm which i