The Thin Thread (1971)

A poor girl (Mona) who works as a simple employee at a bank and provides her family. Under the pressure of need and illness of her father and the pressure of her mother, which insists on her to increase her income, she gets a wealthy old businessman to love her. An engineer (Adel), who works in the company of her lover (Abdo) reveals his love, she convinces him to resign and build his own independent company and give him jewelry as a capital and stand by him and encourage him and cut ties with Abdo. Will their love story continue?