When Billoo’s mother dies due to disease she gives his responsibility to her friend (Rohini Hattangadi). Billoo forms a bonding with her and considers her his mother. Billoo's foster mother takes Billo to her house, where she has a loving husband and three children. Billoo gets along with all of them, and is now a part of their family. But tragedy strikes again when Billoo's uncle (Sudhir Dalvi) is killed by a local goon Than Than Tiwari (Kadar Khan) when he refuses to give Hafta to him. Biloo takes a wow right then to kill Than Than Tiwari whenever He fulfills all his family responsibilities. Years later, Billoo (Shatrughan Sinha) grows up to be a rickshaw driver who has the entire responsibility of his family on his shoulders. His younger brother Ravi (Sumeet Saigal) is aspiring to become an IAS officer and loves Nisha (Archana Joglekar), the daughter if a very rich businessman Teekaram (Harish Patel), while his sisters Pinky and Jyoti (Neelam) are college students. Vijay loves Jyoti and marries her soon with the approval from Billoo and his own parents. Even Ravi marries Nisha but is deviated from his aim by his wife and father-in-law after his marriage. Billoo's youngest sister Pinky doesnt like Billoo's interference in her life, but is forced to take back her views when Billoo saves her from being raped by Munna (Shakti Kapoor), son of Than Than Tiwari (who is now a politician). Nisha coaxes Ravi to ask his brother Billoo to sell their house but somehow Ravi realises his mistake and brings Nisha on right track. After Billoo feels he has fulfilled all his responsibilities, He sets out to kill Than Than Tiwari.