This story centers around the afterlife of Park Bom, an 18 years old girl who died after falling down flat on the ground in a crowd surfing session during her High School graduation night. Before she died, she had lived with her grandparents since her parents died due to a certain reason that was even unknown to herself, right after she was born. She is buried next to her parents' grave, just as she had requested when she was young. She then starts living as a ghost but strangely, there isn't a single other ghost around. Feeling lonely, she decides to wander around and finally finds a huge ancient castle just a few kilometers from her grave, then ends up getting trapped in it. However, the castle isn't empty at all. In it, lived a large group of unimaginable creatures known as vampires.