Cartographer Eric secludes himself in a remote forest in Ireland for an assignment. Meeting dropout Gus and the company of his assistant Olivia bring some turmoil, but not nearly as much as the actual forest, which manifests itself as a living organism. Psychological eco-horror makes the most of its location in which a magical atmosphere can suddenly turn into a nightmare.
Director Finnegan did not opt for all-out horror or complex cgi, but relied on the magic of cinematographer Piers McGrail, who imparts a magical aura to the forest with unexpected light changes. The equally alienating soundtrack takes care of the rest. The question if the phenomena originate from Eric’s imagination remains unanswered for the longest time, although the discovery of a mystical manuscript entitled ‘Knowledge of Trees’ and the consumption of a dose of mushrooms do little to suggest a clear-headed view. In the end the audience is left with no choice, other than to join Eric in his descent into madness.