Shankar (Amitabh Bachchan) grows up as a Nastik (atheist) because his father got murdered by Tiger and his mother and sister got torched in their house and blamed God for doing nothing. After his father, mother and sister got killed, he decided to bring justice himself and the child Shankar went to the palace of Tiger but instead of killing, he blind him. When he grows up, he went to have a career of stealng other people's property. He join forces with Balbir (Pran) and Gauri (Hema Malini). At one time, he was shot by Tiger (Amjad Khan) for stealing his goods and then in an attempt to hide, he found his mother, who he thought was dead in that fire. In a rude awakening, he decided to stop stealing other people's property and find his long lost family. Incidedntally, Balbir saved Shankar's sister who was chased by Tiger's men as she went outside to bring medicine for her mother. When Shankar went to bring medicine for the mother, he finally told her that he was the long lost son and the family were finally reunited. Shankar found out from his sister that the enemy who he thought had killed, actually was alive. He decided to finish him once and for all. Does he succeed in his quest for revenge? Does he finally start to believe God?
Nastik
A devout Hindu priest's son sees his father murdered and his mother and sister burned alive. He becomes an atheist and vows to avenge his family's murders at the hands of an evil landowner and smuggler.
