In one of the most acclaimed British horror films of recent years, orphaned 19 year-old call girl Blue is sent to meet a new punter in Brighton, unaware of the horrifying impact it will have on her life. Blue begins to fall for the charms of her client Bill and also becomes intrigued by the grand Regency house he is renovating; a once infamous Victorian brothel. Together they uncover a secret room that harbours a shocking history of events relating to Blue's murky family past. A terrible supernatural force is about to be unleashed, awakening demons past and present in this terrifying gothic nightmare.