Insaaf Kaun Karega is an action drama. The movie revolves around a man named Jagira (Pran), who has always lived the life of crime and spends most of his time intoxicated or in brothels. His wife Laxmi (Rohini Hattangadi) is pregnant and faces his abuse so as to give a good life to her son, Vikram. Laxmi gives birth to a daughter, but she is abducted soon after the birth, and Jagira too leaves her and joins a criminal gang. Laxmi and Vikram are left alone, she then takes her dead friend’s son Veeru (Dharmendra) under her care and raises him like her own. Vikram (Rajinikanth) grows up and becomes a cop. Jagira finally comes face to face with his son, Vikram, but the two are on the opposite sides of the law. Will Jagira finally realize his mistake and what he has done to destroy his family?