Casey Ellis is going through a difficult time in her life: her mother has been in a deep coma for several years following a terrible accident, and her father, an eminent psychologist, has just died. Casey has always been fascinated by this father she never knew. So, when she learns that he left her his house, Casey is in shock, both surprised and upset that he has shown up so late... But perhaps this is the long-awaited opportunity to discover who this mysterious character was... Casey then sets out to uncover the secrets contained in this house and, when she comes across a manuscript, she quickly understands that the heroine's destiny is intimately linked to her own, and that this text left by her father will allow her to shed light on her past...