Main Intequam Loonga is an action drama. The movie follows the story of a young boy named Kumar Agnihotri (Dharmendra), who lives with his family and is in love with Mala (Reena Roy). The two are all set to get married; however, Mala wishes that Kumar gives up his passion for boxing for both of their sakes. However, Kumar learns that he is the adopted son of his parents, and his biological father was a boxer, who was killed by three men for refusing to participate in the boxing championship. It is then Kumar who decides to avenge his father’s death. Will he succeed in his mission?