Celeste is a girl with a prolonged depersonalization disorder thought to be caused by a post-traumatic stress from events that happened in her past. Tired of living in Salem with the stigma of having a mental illness she decides to move to Boston with hopes of letting go of her anxiety and make something of herself. Little does she know that her new roommates were about to introduce her to a secret underground world she never would have thought existed and discover just exactly who she really is. The Thirteenth daughter.