This film, based on a well-known novel of the same name by Sadegh Chooback, is about a wronged man seeking revenge. Director Amir Naderi's inspiration for making the film was one of his childhood heroes, the legendary Zar Mohammad, who waged a one-man war against four swindlers and provoked wide spread popular sentiment against tyranny.
A man from a respectable and rich family is fascinated by a derelict woman. He intends to marry her, and despite his family’s disagreement, he does it. But the former lover of the girl remains intrusive, until she kills him to defend herself. She becomes imprisoned, but after being released from the prison, the family of her husband finally accept her.
A young engineer who is returned home from Europe becomes responsible of taking care of his father's company. But a villain friend of him manages to drag him to gambling and drugs making him to lose his money and his family. Years later the young engineer in an accident helps a rich man and due to that manages to marry his girl and gets back his life and his family once again.
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.