Sophia, an orphan, finds her life turned upside down after a massacre at the orphanage. Her best friend perished in the attack, but Sophia survived, only to become a half-vampire. Dr. Ozwald, the director of a secret organization called Societas dealing with paranormal phenomena, takes her under his wing.

Together with her new allies, they investigate paranormal cases, while Sophia delves into the mysteries surrounding the Judas Brotherhood, the organization responsible for the massacre. As they uncover dark secrets and face supernatural threats, Sophia grapples with her newfound identity and seeks vengeance for those she's lost. But in the shadows, the Brotherhood lurks, weaving a web of deception and danger that threatens to consume everything she holds dear. Will Sophia andher friends uncover the truth before it's too late, or will they become victims of the very darkness they seek to vanquish?