Otaghe Tarik : فیلم اتاق تاریک : The film tells the story of a couple, Farhad and Haleh (played by Saeed Soheili and Sareh Bayat), who have recently moved with their young son, Amir, to a newly established suburb around Tehran. Their lives begin to change as they settle into this new neighborhood.

The movie starts with a scene where Amir goes missing in the hills near their home. After he is found, his behavior starts to change—he experiences more frequent bedwetting, nausea, and stomachaches. Amir's whispers to his father, Farhad, arouse suspicion. When Haleh learns about the situation, the characters' distress and the complexity of the story intensify.