Serafina has lived in the basement of Biltimore Estate for her whole life. Watching the wealthy people, who live upstairs, from the shadows.
One day while prowling the hallways at night Serafina sees a man in a black cloak kidnap a girl in a yellow dress by putting her in the folds of his cloak.
Serafina starts to look for clues on the secod floor of the house, to solve the mystery of who it is. While doig this she meets Braeden, the owner's nephew.
Serafina seeks out Braeden and ends up going in a carriage with him. They get attacked and the stable boy goes missing, Serafina knows the man in the black cloak took him. Braeden gets rescued, but to avoid questions, Serafina is left behind, to find her way home.
When looking for a way home Serafina stumbles upon a cemetery with a angel in the center. Two mountain lion cubs start to play with Serafina. A lioness then attacks her Serafina barley escapes. When she gets back to Biltimore she knows who did it.
Braeden invites her to dinner and gives her a dress. Serafina then uses it to make herself look like bait, the she runs to the Angels Glade there she fights and kills the man in the black cloak, with the lioness, all the victims are freed. THE END