There are things we don't know about. Things we shouldn't know about. There is a world all around us, one we pass by everyday. On our streets, in our homes, this world is everywhere. Vampires. The city of Masan. These creatures are more active then usual. A central for the 7 vampire clans, Masan is sometimes called "the vampire capital of the world." The clans live in peace, even helping one another in certain situations. The vampires live, the humans live, and everything is fine for a very long time. After years of continual peace, the tranquility is broken.