There are several types of intelligent beings in this world: vampires, werewolves, mortals and fairies. Each of them chooses whether to coexist together or not. Vampires are inherently more reclusive, werewolves are in the middle, and fairies want to be closer to mortals because they are more similar to them. Blade is a vampire who lives all alone in a castle on the outskirts of the city. But today, like others, he found himself at a masquerade ball in honor of tradition.