1970s, rural Yorkshire. Richard and Juliette’s seemingly idyllic family life is thrown into turmoil when their young son Owen starts acting out of character. A sudden, tragic event brings grief and drives a wedge between the once happy couple.

At Starve Acre, their remote family home, academic archaeologist Richard buries himself in exploring a folkloric myth that the ancient oak tree that once stood on their land is imbued with phenomenal powers. While Juliette turns to the local community to find some kind of peace, Richard obsessively digs deeper. An unexpected discovery soon occupies the couple’s attention and dark and sinister forces, unwittingly allowed into their home, offer a disturbing possibility of reconnection between them.