Sunil (Ranvir Shorey) and Malti Arora (Konkana Sen Sharma) are a happily married couple for many years. They have a son named Avi and live in a middle class apartment. But now there relationship has some missing. Malti complains to her friend that she has not had sex for over a month. As Sunil learns that a colleague has heated up his love life with partner swapping, he is completely hooked upon the idea gets the contacts together.
When he tells Malti about the idea she gets angry and leaves him. Sunil then suffers a heart attack which brings Malti back and now she is willing to participate in Sunil’s idea of partner swapping. The couple which participates with hem in partner swapping is Vinod (Rajat Kapoor) and Kalpana (Koel Purie).