After their father’s death, the two brothers, Nur al-Din and Shams al-Din, agree to marry two sisters on the same day. The main idea is that Nur wants to have a son, while Shams wants to have a daughter. And so it happens. Shams al-Din has a daughter and Nur al-Din has a son – Badr al-Din. Right before he dies, Nur tells his young boy about his uncle Shams, who is still in Cairo.