After saving a friend from the clutches of Lust, Ruby finds herself tried and sentenced for the crime of murder and is incarcerated in Ravenshill Prison. Seemingly abandoned by most of those she considers her friends, Ruby finds she has to adapt to her new surroundings quickly to avoid being walked all over. Yet even behind bars nobody is safe, and she finds herself wrapped up in another mystery as the women become targeted by something that could only be related to the demon world.

As Ruby fights to save those in her new environment, she is also learning more about her past than she ever considered, that is until a figure from the not too distant past comes back to haunt her and steal her dad's journal...