Twins

Prince Arsalan who is in love with Farrokh-Lagha travels to the west to find her. He meets the two ministers of Petros Shah. With the aids of Shams Vazir and enmity of Qamar Vazir cause him to has many adventures which finally lead to the marriage of him with Farrokh-Lagha.

The sultan finally has a son after a long wait, but when he is about to introduce his heir, he is murdered by his vizier's conspiracy.

The boy is a medical student, and the girl is a law student. They meet, fall in love, and decide to get married. However, the girl is forced to marry a wealthy man. Years later, the girl's husband is injured in an accident and taken to the hospital where the boy is a doctor. Here, the two old lovers meet again. Later, the girl's husband is murdered, and the boy is accused of murder because of his relationship with the girl and is prosecuted. But it soon becomes clear that the girl's husband had a mistress, and the mistress is the killer.