Engineer Talat, son of the wealthy merchant Mursi, lives under pressure from his father to marry the poor girl Fatmah, after she refuses to marry Sayyed el-Itr, who loves her but is poor and works for Talat. Talat rebels against his father's control, so he divorces Fatmah and separates from working with his father. Talat gets acquainted with engineer Yunus, son of a senior politician who works in the position of undersecretary of a ministry. He decides to marry his sister in order to achieve influence, power and money.