Happy Birthday

After borrowing money using his identity card as collateral, a man returns years later to repay his debt and reclaim the document. However, he discovers that his creditor, Mr. Sharifi, has disappeared. Investigating further, he learns that Sharifi used his identity to marry a woman named Pari, now a singer known as Nooroshani, before dying in an accident. As a result, the man's identity has been legally declared invalid. Caught in a series of comical misunderstandings and bureaucratic complications, he must find a way to restore his legal identity so that he can finally marry the woman he loves.