Claire goes to see her family living in a squalid farm after 18 months with her boyfriend Paul. When Claire arrives, she brings with her a mysterious vase containing specific instructions. Living on the farm are her father Bill, her younger sister Jen and her old grandmother Nana who is about to pass away after a long illness. She starts speaking to Claire about a strange woman known as "The Banshee" that will take care of her after the death. At first, Claire thinks that her grandmother is raving, but afterwards she starts hearing piercing screams and a female figure enters in their house, walking towards Nana's room. Claire learns that the Banshee actually exists, and has to fight against this female ghost and her spirits wanting to damn the entire family.