Kallu (Amitabh Bachchan) lives with his brother, sister-in-law and little niece. They are poor but happy. Kallu’s life is shattered is when his brother comes up against the local mafia don, Shahani Seth (Amjad Khan). In the confrontation, the brother is killed. Kallu swears revenge - he changes his identity to Kaalia, a master criminal, whose aim in life is to destroy Shahani Seth and his empire. Kaalia’s career comes to an abrupt end when he’s caught and jailed. In prison, he comes up against merciless - the legendary Raghubir Singh (Pran), a prison warden who hates crime and all criminals and it is famous about him that not a single prisoner has succeed in breaking through his prison. Will Kaalia succeed or not?