Merricat (Taissa Farmiga – THE NUN) lives with her sister Constance (Alexandra Daddario – BAYWATCH) and her Uncle Julian (Crispin Glover – BACK TO THE FUTURE). The trio are survivors of an arsenic poisoning that killed everyone else in the family five years prior. Despite being hated by the townspeople, the sisters live an idyllic life, until cousin Charles (Sebastian Stan – AVENGERS: ENDGAME) arrives and dark secrets are unravelled that will change their lives forever.