Ryan, the son of the Blue Moon Empire's Prime Minister, boasts an impressive pedigree. Yet, despite his distinguished background, he endures his half-brother's abusive treatment throughout the year due to his unfavorable standing in the household. During his half-brother's coming-of-age celebration, Ryan manages to escape his torment only to be abducted by traffickers and sold on the underground market. Thankfully, Marshal Austin of the Star Sea Alliance rescues him from the grim fate of his captors. In an unfamiliar land, Ryan reunites with his mother's blood servant, and gradually pieces together the secrets of his past. As the plot unfolds, dormant vampires reawaken after over a century of silence, reigniting an age-old war between orcs and vampires.