Ali gets acquainted with a wealthy man named Dara and starts working at his factory as a trusted employee. Ali gradually falls in love with Dara’s sweet daughter, but Parviz, Dara’s manager, who has his eye on Sherin and aims to seize Dara’s wealth, becomes interested in her as well. Suspicion arises in Dara’s mind about Ali, and he orchestrates a plan to have Ali fired from the factory.