Hojjat and Mehdi have a long friendship and Qasim is a mutual friend of both of them. Mehdi is engaged to Qasim's sister. After Hojjat decides to propose to Masoumeh, Qasim's neighbor, events happen that affect the friendship of the three of them.

Akbar and Aghdas plan to get married, but Akbar gets into a fight with a man named Qasim Siah, and is imprisoned.