As the world reels from a devastating pandemic, scientist Martin Lowery (Joel Fry) ventures deep into a remote English forest to reconnect with a former colleague and continue vital research. Accompanied by park scout Alma (Ellora Torchia), he soon discovers the woods harbor far more than just flora and fauna. Their journey becomes a desperate fight for survival when they encounter a pair of enigmatic and increasingly hostile forest dwellers, including the unsettling Zach (Reece Shearsmith). Directed by Ben Wheatley, this atmospheric horror film plunges its characters into a primal landscape where ancient folklore and cutting-edge science violently collide. As the boundary between reality and nightmare dissolves, Martin and Alma must confront a terrifying natural force that seems to possess a will of its own, turning their scientific expedition into a psychedelic and visceral struggle against an incomprehensible earthbound terror.