An unholy alliance between two damaged souls leads them on a disturbing descent into the depraved realms of black magic. Sophia is a grieving mother desperate to make contact with her murdered son. Joseph is an anti-social, alcoholic expert in the occult who reluctantly agrees to help her. Holed up in a remote house amidst the desolate wilds of Northern Wales, the two embark on a grueling six-month series of dark rituals that will push them both to the physical and psychological breaking point.