Kishan (Amitabh) and Bishan Kumar (Amjad) were childhood best friends. Young Bishan lives a wealthy life with his mom (widowed) and Kishan was a former servant cum cook. Both are virtually inseparable. Bishan's uncle was partly responsible for his dad's death, who after serving a long prison sentence, begs his sister to forgive him, which she does, and he, along with his son, Jagdish (Ranjeet), move in to the house. He felt Bishan and Kishan need to be seperated and convinces his sister to permit Bishan to go to Bombay for further studies, and then abroad also. Years later, Bishan returns home to renew his friendship bond with Kishan. Bishan finds that Kishan has a golden voice. He wants him to go to Bombay and get trained with Bharatji, which Kishan reluctantly does. There he introduces him to his wife (Tanuja), Sheela (Neetu), and son Munna. After Kishan finishes his training, he goes for his first concert, which is a huge success and becomes a star overnight. It is then he finds out that Bishan has lost everything, his wife and son have left him, and his uncle and cousin had embezzled all the money. Kishan uses his only asset, his voice, to find out that a desperate Bishan who abducted a group of school-girls, abroad a yacht that he used to own, demanding huge ransoms from their respective parents. Subsequently, Kishan learns that Bishan is dead. Unable to handle this shock, Kishan loses his mental balance and is hospitalized. The question remains, what compelled Bishan to abduct the school-girls, and did Bishan actually die?