Khushboo is story of Kusum (Hema Malini) and Brindavan (Jeetendra) who are engaged at a very young age. However, due to some family feuds the engagement is broken off. Brindavan grows up to be a doctor and one day coincidently meets Kusum and comes to know that she is still unmarried. However, Brindavan now is a father to a child named Charan. He had to marry Lakhi (Sharmila Tagore) in some difficult circumstances and who now is no more. From here, Khushboo is a journey of Brindavan and Kusum and their eventual union. It is about Kusum - a strong willed woman who doesn’t want to be taken back out of mercy. She wants back her rightful place in Brindavan’s home but with respect. It is about Brindavan, who is torn between his feelings for Kusum, for his mother and also his duty as a doctor. And within all this, it is also about Brindavan’s and Kusum’s mutual bonding and respect