Niloofar, 35 years old, lives alone in Tehran with her aged mother, and stays busy with her tailoring shop. Tehran's air pollution has reached maximum levels because of thermal inversion, making it hard to breath. When doctors insist that her mother must leave smoggy Tehran or she will have not long to live, Niloofar’s older brother and sister decide that she must also move away to the countryside to accompany her mother. Niloofar is torn between family loyalty and living her own life and pursuing a potential love interest she has kept secret from her family. She is the youngest and she has always succumbed to family pressure, but this time she decides to stand up for herself.