The psychologist Cathrin Blake actually wants to withdraw from her work for the police. After a mysterious murder during the ghost parade of the "Samhain" harvest festival, however, Superintendent Kelly asks for her support. It's not just about the bloody act, but also about the disappearance of Holly Reid, the victim's friend.
A long time ago in a distant fairy tale countryside, a young girl leads her little brother into a dark wood in desperate search of food and work, only to stumble upon a nexus of terrifying evil.