Jwalamukhi (1980)

Abandoned by his biological mother at the time of his birth, Rajesh is brought up by Rai saheb, who also has a son of his own, Vikram. Years later, Rajesh has grown up to be a police inspector, while Vikram is now a customs officer. Both young men are honest, diligent, and dedicated. These attributes bring them into confrontation with criminal don P.D., who is also a close friend of Rai, and possesses a secret document that links Rai to a murder, namely the murder of his wife, Sheela, and P.D. will use this document to force Rai to ask his children, not to interfere in his illegal operations.