In the new male-dominated world, Nisha struggles and meets with Alok ( Rajesh Khanna). Nisha refuses and leaves the house, handing her daughter's responsibilities to their house maid. Kabir resists and refuses to end his affair and asks her to adjust to this change. Upon return and realising the affair between her husband and cousin, she is shattered and confronts Kabir and Indu. Oblivious to these new changes, Nisha continues with her life and eventually delivers a girl. As Nisha becomes restricted in her daily activities, Indu gets closer to Kabir and engages in an extramarital affair with him, reviving her erstwhile attraction to him. Nisha's pregnancy is deemed as a complication by her doctor and upon the insistence of Indu's mother ( Shubha Khote), Indu moves into Nisha and Kabir's home to take care of her. Meanwhile, a happy Nisha is oblivious to Kabir's affairs and dalliances with several women, on the pretext of business trips. After marriage, all seems well in the life of Nisha and Kabir and soon, Nisha becomes pregnant.
![dushman na kare dost ne wo kaam kiya hai dushman na kare dost ne wo kaam kiya hai](https://pbs.twimg.com/media/EYCV0rWUcAYCPuP.jpg)
However, Kabir takes a liking to Nisha and to the dismay of Indu, marries Nisha, wanting an obedient and socially conservative wife moulding to the traditional norms as Nisha constrained to, compared to Indu, who was liberal and progressive in her views and behaviour. As both cousins enter their 20s, Indu falls in love with the rich and good-looking Kabir ( Rakesh Roshan). Nisha ( Smita Patil) is an orphaned child who has been adopted by her relatives and raised alongside her cousin, Indu ( Tina Munim).