Story of Mahan (1973)

The feud between Taher's family and Zaman's family is from old times. But Taher falls in love with Zaman's sister Manzar. They have promised each other to die together. Another guy Aghil also loves her and wants to marry her. When Zaman and Aghil find about the love between Taher and Manzar they decide to take action.