Joel Fry, Reece Shearsmith, Hayley Squires, and Ellora Torchia star in writer-director Ben Wheatley's horror film. The story is about Martin Lowery, a scientist who, along with a park scout, travels deep into the English forest to hopefully locate a colleague who has recently become uncontactable. They begin to fear for their lives as a mysterious force makes its presence felt under the cover of darkness.