The vampires are the embodiment of darkness; the gods are holy beings. Throughout the ages, the two worlds of gods and ghosts have always been at odds, but there is only one person who brings light and warmth to the ghost world, and brings a lonely girl who has never met. After spending five years together, they have to return to the god world because of the instructions of the gods. After another five years, the girl has grown into They found the Blood Emperor who could act alone, and the joke of fate started with a bottle of potion that "turned into a human being". The two met again. Just when they were about to regain their identities and fall in love, fate played another joke on them. Behind this relationship, there was a shocking secret between the world of gods and ghosts...