Raj "Raju" Verma lives with his disabled and paralyzed mother, Gayatri. Before a job interview, he saves textile mill owner Laxminarayan Jetley, who offers him a job in his factory run by his ambitious daughter, Sheetal. Her competitive attitude and open insults of staff earns her several enemies, including her henchman Tilak Bhandari, whom she often slaps and insults.
As a mechanic, Raju confronts her several times about the proper treatment of workers. She is enraged when he turns union leader. Raju falls for the mill's modest worker Kajal. Suryadev, a competing owner, tries to eliminate Sheetal. Charismatic, Raju guides her on how to handle rivals and workers. Egoistic and angered, Sheetal slaps him, who retaliates by reaching her cabin and slapping her back to back.
Sheetal cannot fire Raju, as then she would have to admit and give a proper reason. Vengeful, she convinces Gayatri to get her married to Raju. Reluctantly, on Gayatri's order, Raju sacrifices his love for Kajal and marries Sheetal. He lives in his own house and works as a mechanic but moves to Sheetal's luxurious house later, upon Gayatri's request. Slowly, he falls in love with Sheetal.
Kajal turns caretaker of Gayatri, which results in the betterment of Gayatri's health. Tensions arise when Sheetal eliminates Kajal, seeing Raju kissing her forehead. Later, labour issues cause the workers to go on strike. A competing mill owner, for personal benefit, hires people to set it on fire. Raju is mistakenly arrested, and Gayatri visits Sheetal's house to clarify the matter.
Insulted and taunted, she collapses, but Raju saves her and slaps Sheetal hard. Guilty, Sheetal, who now has feelings for Raju too, is kidnapped by Suryadev. Raju rescues her. Sheetal improves herself. Kajal turns managing director of her company, as Sheetal quits her job.