Nima and Balraj Kohli are happily married middle aged couple, living in rich neighborhood of Pune. They have two boys, elder Sagar and younger Babbu. Things seem to go smoothly and Sagar falls in love with medico Sarita who easily gains the approval of Sagar's parents. Slowly it is revealed that Nima was Balraj's second wife and not actually the biological mother of Sagar. Balraj was the husband of Sharada, the elder sister of Nima. When Nima lost her husband in an accident, immediately after her marriage, shocked Sharada falls off the stairs, damaging her head. She had been in a mental institute since 14 years. As Balraj had no one to manage his household in the absence of Sharada, Nima started to look after Balraj and seven year old Sagar. Seven years after the accident, Sharada and Nima's father, hopeless of Sharada's recovery, convinces Balraj and Nima to get married. In present day Sharada gets hit on her head by an inmate of mental institution and goes into coma. Balraj along with Sagar goes to Delhi to finalise Sagar's marriage with Sarita. In Mumbai, Sharada suddenly comes out of the coma and thinks that she woke after the initial accident 14 years back. The doctor tells her that she had been in a coma and doesn't reveal the fact that Balraj and Nima are now married. Confused, Sharada escapes hospital and comes home. By the time, Nima gets the information from doctor and arranges everything as it was 14 years before. She sends her young son to stay with Sarita and makes herself up like a widow, as her sister knew. Sharada comes home and feels happy to see everything was same as before. After some time Balraj returns with good news of his son's engagement. He is happy to see Sharada recovered but feels sad to see Nima in a widow's attire. They maintain things in that way for some time for fear that Sharada will fall ill again if she knows the truth. But, Nima's son Babbu comes home from Sarita's hostel, making everyone reveal the truth to Sharada. Sharada is shocked and loses consciousness. When she regains consciousness she acts crazy and violent. Sarita, while trying to pacify her, comes to know that Sharada was just acting crazy to be put away permanently from her sister's life. She makes Sarita promise not to tell anyone and she does same with the doctor. Thinking that she again lost her mind, saddened Nima and Balraj resume their normal life.
Cast
Shashi Kapoor as Balraj Kohli
Raakhee as Sharda Kohli
Rekha as Purnima a.k.a. 'Nima'
Poonam Dhillon as Sarita Sethi
Raj Kiran as Sagar Kohli
A.K. Hangal as Father of Sharda and Nima
Iftekhar as Dr. B.K. Gokhale
Master Vikas as Babbu Kohli
Music
The score was composed by R. D. Burman. The main songs are: "Aaungi Ek Din Aaj Jaoon", "Chup Chup Chuppa Chuppi", "Jahan Pe Sawera Ho Basera", "Jane Kaise Beeteei Ye Barsaaten", "Sanware Sunao Bansuri" and "Tumhe Chhod Ke Ab Jeene Ko" sung by playback singers Lata Mangeshkar, Kishore Kumar and Asha Bhosle.
"Jahanpe Sawera Ho Basera Wahi Hai" - Lata Mangeshkar
