A remote village on the Irish coast, surrounded by dense forest. This is where Caitlin returns after the death of her mother - to the place she has avoided since the disappearance of nine-year-old Roisin without a trace twenty years ago. Her sister Deedee, now a police officer, has never stopped asking what happened to little Roisin back then. Together, the two women delve into dark secrets of the past. The deeper they penetrate, the clearer it becomes: Someone in the village knows the truth. And is ready to do anything to keep it hidden forever...