Matriarch is a horror film that follows a family who moves into a remote farmhouse in Ireland. The family soon discovers that the house is haunted by the ghost of the previous owner, a woman who was known as the Matriarch. As the family tries to uncover the truth behind the ghost's presence, they realize that the Matriarch is seeking revenge for a past wrong that was done to her. The family must fight to survive as the Matriarch becomes more and more powerful, threatening to consume them all.