Shubh Mangal Saavdhan is the story of two lovebirds who are about to get married but they stumble across an expected roadblock. Mudit (Ayushmann Khurrana) and Sugandha (Bhumi Pedenkar) fall for each other but neither approaches the other. Sugandha is waiting for Mudit to make the first move. When he does, things however go horribly wrong. Nevertheless, they fall in love and decide to get married. Their respective families also agree for this union. One night, when Mudit is alone with Sugandha at her place, they decide to make love. Sadly, Mudit is unable to perform due to anxiety. A shocked Mudit refuses to even talk about it. Unfortunately, the news of this 'tragedy' spreads and Sugandha's parents find out. They assume Mudit is infertile and contemplate cancelling the wedding. How Mudit and Sugandha come out of this madness forms the rest of the film.