The Guardian Demon.

After her father's death, Lan (Phương Thanh) moves to a rural village and becomes a housemaid for Mr. Danh (Mạc Văn Khoa) — a widower with no children. But the moment she steps into the house, Lan is confronted with eerie phenomena and a string of mysterious deaths. With the help of Sơn (Quốc Trường), a horror novelist, she begins to uncover terrifying secrets and the dark history buried within the house.