Ryan is the son of the Prime Minister of the Blue Moon Empire and has a distinguished background. Even so, Ryan is forced to endure the abuse from his half-brother throughout the year since he is not a favored child of the household. Upon his half-brother's coming of age birthday party, Ryan manages to escape but only to be kidnapped by traffickers and auctioned off in an underground market. By chance, Ryan is then bought by Marshal Austin of the Star Sea Alliance. In a foreign country, Ryan meets his mother's blood servant and slowly begins to uncover the mysteries of his past. As the story progresses, the vampires that have been silent for a century starts to re-emerge. Thus, another war between orcs and vampires begins.