Sahar Mahan, a musician, and Shahram Shab-Aviz, a theater director, decide to divorce after living together for several years, and they want their son Amir Hossein not to find out. Amir Hossein is supposed to be with his mother three days a week and the rest of the days with his father. A friend of Shahram named Peyman, who together with his fiancé are members of Shahram's theater group, plans to get married soon. They need an actress for the show they are going to stage, and in this way, Leila Mashreghi enters Shahram's life.