The human judge Aria was framed and imprisoned by the vampire council. Her blood can make vampires lose their immortality. She must escape from the dungeon and prove that she is the only survivor of the genocide war three hundred years ago. The vampire prince Valerius wants to use Aria's blood to eliminate his competitors. He sets up a trap to make Aria mistakenly think that he is an ally. In fact, he wants to steal the ancestor's blood from her body and become the new king. The werewolf Alpha Dorian was hired to hunt down Aria, but found out that she was the target of Valerius, his genocidal enemy. He turned to protect Aria in exchange for a chance for revenge. Lucian, the elder of the Vampire Council, hides his identity and supports Aria. His real purpose is to use her to trigger a vampire civil war and return his exiled family to power. Aria activated her bloodline memory during her escape and discovered that the genocide war was a lie fabricated by the Parliament. The real killers were the current members of the Parliament who joined forces to eliminate the bloodline of the ancestors. Aria unites Dorian and the oppressed half-vampire tribe to fight back into the council hall, forcing Valerius and Lucian to expose each other's crimes in public, and she will eventually judge the entire council. Aria chose not to become the new ruler. She distributed the immortal blood to all half-vampires, ending the vampire era and leaving herself and Dorian as mortals.
