Two sisters from an aristocrat family fall in love with the son of their driver. Finally the little sister retreat for the oldest sister to get marry with him.

Laleh is a wandering girl who is arrested after a robbery at a railway station and promises the police officer that she will live a righteous life from now on. A young worker named Parviz tries to convince Laleh to marry him. But Laleh is against the marriage proposal, because she has to take care of her mother and father, who are always drunk. The owner of the house where Laleh's family lives convinces Laleh's father to consent to his daughter's marriage to Abbas.

Mehdi, an accountant at a contracting company, is in love with Lobat, a cafe singer. Lobat, who is friends with a cunning young man named Hamid, plans to swindle Mehdi. When Mehdi and Ali cash a check for 750,000 Tomans, Taghi, who was formerly Mehdi's friend and classmate, steals the money. Mehdi gives Taghi's details to Lobat, and Lobat, with Hamid's cooperation, kills Taghi. Lobat then turns Mehdi over to the police as the murderer. Lobat also kills Hamid, and she herself is caught by Mehdi, who is cooperating with the police and has been released from prison.