The Strengthening Sun (1974)

Hojjat is a gendarme, and his brother Mansour is a smuggler. Mansour is sent to prison, and after his release he promises Hojjat that he will no longer engage in illegal activities. Mansour meets a prostitute named Mahboubeh and intends to marry her. A smuggler named Khalaf and his brothers plan to eliminate Hojjat from their path...