A Vietnamese–Thai wedding twisted into haunting and disturbing rituals. Inspired by a real massacre within a mysterious Thai family, Cô Dâu Ma follows Yến as she becomes a bride in Thailand for the first time—only to uncover terrifying secrets and horrifying rites awaiting her.

Tells the story of Lam - a man who used to be a gangster but lost his memory and now hides like an ordinary person, making a living by manual labor. Lam lives with his wife - Hanh and her stepdaughter Hien. Hien still has not accepted the love of Uncle Lam for her. Hien grew up impulsive and was seduced by Tien - a hypocritical young man who lured girls into brothels to become prostitutes. Throughout the film is the journey to find Lam's daughter.

When Bao, a young mechanic, dismantles a 90s car in his old garage, he unwittingly unleashes a sinister force. As haunting events spiral out of control, the arrival of a mysterious investigator reveals long-buried secrets of greed and human brutality.