Dave blames himself for the death of his wife Samara. He moves to the abandoned family farm to recover. There, he connects with his cousin Gareth. When they find a bottomless pit that changes everything that enters it, they become obsessed with its secrets.

Un alcohólico que acaba de enviudar choca involuntariamente con una secta del siglo XIX que adora a una fuerza oscura en las profundidades de las colinas boscosas del norte del estado de Nueva York.