Semur 4: Judgment is the story of a young man who finds himself in terrible events while trying to sell the house he inherited. Ozan, who lives a lonely life with no one, learns that he has inherited a house one day. Barkın tries to sell the house in a short time because he needs money. Ozan, who takes a friend with him for the sales transactions, decides to spend the night at home after the transactions prolong. However, it is almost impossible for them to come out in the morning.

Asli, living in Istanbul, is forced to return to a village she hasn't seen in 20 years and care for her disabled brother after receiving news of the death of the father she hasn't seen in years. Although she plans to return to Istanbul at the first opportunity, when she realizes that behind the death of her father there is a great sin hidden by all the villagers, Asli decides to fight the curse of the demons that has befallen the village and the village community.