In 1940, in the immediate aftermath of the Spanish Civil War, a young girl living on the Castilian plain is haunted after attending a screening of James Whale's 1931 film Frankenstein and hearing from her sister that the monster is not dead, instead existing as a spirit inhabiting a nearby barn.
While doing a thesis about violence, Ángela finds a snuff video where a girl is tortured to death. Soon she discovers that the girl was a former student at her college...