As Sera delved deeper into her family's legacy, she discovered that the Blackwood women had not always been alone in their fight against the darkness. They had been aided by a secret society, known as the Guardians of the Threshold, who had dedicated their lives to protecting the world from the supernatural.But the Guardians had been betrayed, their ranks infiltrated by a malevolent organization known as the Obsidian Circle. The Circle sought to control the power of the Veiled Threshold, to harness the spirits for their own nefarious purposes.It was the Obsidian Circle, Sera realized, who had been responsible for her parents' deaths. They had wanted to eliminate the last of the Blackwood women, to clear the way for their own agenda.Determined to avenge her parents and stop the Obsidian Circle, Sera decided to seek out the remaining members of the Guardians. Elias guided her to a hidden sanctuary, located in a remote village miles away from Blackwood Estate.There, she met a group of elderly men and women, their faces etched with wisdom and sorrow. They were the last of the Guardians, and they had been waiting for her.They told her about the history of the Obsidian Circle, about their dark magic and their insatiable lust for power. They warned her that the Circle was growing stronger, that they were close to achieving their goals.They agreed to help her, to train her in the ancient arts of spirit-binding and to prepare her for the coming battle