The idyllic village of Stainbach is being haunted by a mysterious demon. It turns out that the nightmares of Marlene are responsible for the dark events. She is driving some of the inhabitants of the village insane during her terrible dreams. When she discovers her nightmares are about a real place, she tracks down the village of Stainbach to get to the bottom of the mystery. There, she learns about the consequence of her dreams and suffers a nervous breakdown. Soon after, she is admitted to a psychiatric ward. Her daughter, Mona, journeys to Stainbach to find out the reason for her mother's breakdown and the demonic nightmares she suffered from. She comes into contact with the peculiar villagers and discovers the dark history hidden within the quiet village. Perhaps the nightmare isn't the demon that threatens the town after all, but rather - the past.
In 1978, the inhabitants of a small village in Iran called Zalava claim there is a demon among them. Massoud, a young gendarmerie sergeant, who investigates this claim encounters an exorcist attempting to rid the village of the demon. When he arrests the exorcist on charges of fraud, the villagers fear and anger escalates. Massoud and his love interest, a government doctor, soon find themselves trapped in a cursed house, surrounded by villagers who believe they are both possessed by the demon.
Widowed mother Holly is radically tested when her teenage daughter Betsey experiences a profound enlightenment and insists that her body is no longer her own, but in service to a higher power. Bound to her newfound faith Betsey refuses to eat, but loses no weight. In an agonising dilemma torn between love and fear, Holly is forced to confront the boundaries of her own beliefs.
Jonty, an influencer with an ambition to reach over a million followers, will stop at nothing to become famous. When a demonic presence appears in his student house, Jonty decides to stream it and gain millions of followers. But at what cost.
Biochemist Michael Morbius tries to cure himself of a rare blood disease, but he inadvertently infects himself with a form of vampirism instead.