Shamsher Singh (Dilip Kumar), his son Pratap Singh (Suresh Oberoi), and daughter-in-law lead a happy life in an Indian village. Shamsher works as an engine driver with his friend Gurbaksh Singh (Shammi Kapoor). Pratap is appointed as the new inspector-in-charge of the village but is killed brutally by Jagawar Chaudhary (Amrish Puri), a notorious local smuggler, after Pratap refuses to help Jagawar in his illegal activities. Seeing his son dead, Shamsher Singh is enraged and he kills some of Jagawar's goons whom he had seen throwing his son's dead body in the forest. When he is about to inquire from one of Jagawar's men about the person behind his son's murder, he is stopped by the police and is asked to surrender; Shamsher somehow manages to escape. His daughter-in-law dies while giving birth to Kunal Singh (Sanjay Dutt).Wikipedia