आँसू बन गये फूल (1969 फ़िल्म)

Principal Vidyanand (Ashok Kumar) is a hardworking and diligent person. Due to his honesty, he gets in the wrong side of Seth Dharamdas (Raj Mehra), who conspires with Vidyanand's pupil, Shyam Rao (Anoop Kumar), and has him sent to prison. After Vidyanand serves his sentence, he has only one thing on his mind - to avenge his humiliation, and he will go to any extent to achieve this.