When Anna Sykes loses her brother in a violent altercation, her life takes the back seat to her desire to find the truth. However, when the mysterious Sebastian Cain appears she is propelled into a world where she is forced to question the most fundamental concepts of life and death. After Anna is introduced to a clandestine organisation she discovers that the world as she knows it has been on the brink of a supernatural disaster for many years. Now, with a paranormal malevolent force pursuing her, she finds herself pulled into a conflict between good and evil, while at the same time discovering why she is essential to its outcome.