In this social comedy two families come together as the two daughters of one family get married to the two sons of the other family. So Preeti marries Pankaj and Sapna marries Sanjay. Pankaj has a mentally challenged sister Nanki whom he deeply cares for.
The trouble starts when Nanki insists on sleeping with the couple. Preeti is evidently upset. Next day Nanki inocently asks Preeti for the saree, which Pankaj has gifted her. Preeti refuses. Nanki is upset and she spoils the saree. Preeti is disheartened. She goes to her parents house. From there on unexpected things happen as the plot gets churned with its twists and turns.