Nine-teen year old Lukas, a police officer of Scythian federal police, has a pretty average life for a vampire, annoying co-workers, crazy friends, and bossy aristocrats, trying his best to control his blood thirst, the usual. But then it all changes, when Charlotte, a Earthian Human discovers this "other world", he has to look after her. Just as everything seems to be okay, everything just goes down hill for him...