"My name is Vladislaus Draculesti..."

Having fallen in battle long ago, Count Dracula is reborn as a katana - wielding young vampiress in an alternate - history Europe.

After the reincarnated Dracula rescues a girl named Clara from a mysterious stranger, Clara reveals that she is a golem fleeing from an organization called Cerberus, which seeks out "monsters" such as herself to create an army of human-monster hybrids. Clara begs the vampiress to flee with her to a distant sanctuary where the two of them will be safe... but as they set out for Monster Island, the sinister forces of Cerberus are in hot pursuit.