When two twin brothers Sudhir and Adhir get orphaned upon the death of their father, Magistrate Chaturvedi adopts them and brings them up like his own children. Though Adhir goes insane after the death of his father, Sudhir picks up the opportunity, studies hard and becomes a doctor like Magistrate Chaturvedi's son Prashant. When Prashant gets caught for performing an illegal operation, Sudhir takes up the blame to repay the debt of the Chaturvedi family on him and his brother.
Amitabh Bachchan
as Dr. Sudhir Roy / Adhir Roy
Rakhee Gulzar
as Kavita Chaturvedi (Sakhi)
Vinod Mehra
as Dr. Prashant Chaturvedi
Deven Verma
as Hiralal Tandon
Aruna Irani
as Nandini Malhotra
Om Shivpuri
as Mr. Chaturvedi
Sheetal
as Ruby Dutt
Asit Sen
as Dr. Agarwal
Goga Kapoor
as Major Dutt
