Kamal and his friends Ezzatollah and Bagher are involved in smuggling. They work for Mehdi Jabbar and decide to turn to an honorable profession. One of Kamal's friends named Kazem-Baba is killed by the gendarmes while transporting a smuggled shipment. Before his death, he asks Kamal to take care of his son Amir. Mehdi spreads rumors that Kazem was killed due to Kamal's conspiracy and that he intends to seize Kazem's ship.