Two brothers, a mining supervisor and a mining engineer, are interested in a girl at the same time without knowing about it.

Madadali has been interested in Ra'na for years, but the girl's father, Mash Yadollah, and her mother agree to marry their daughter to Lotfollah.

A father on his deathbed stipulates that after his death, his two children will inherit his property on the condition that his grandchildren marry each other and have children. The two brothers try to convince their children to marry each other with Ramin's help: but Mehri, the cousin, and Mehdi, the cousin, each refuse to do so, imagining that the other has agreed to marry them with the intention...