Story: Shubh Mangal Savdhan is a remake of Kalyana Samayal Saadham (2013), a couple fall in love but then the groom discovers that he suffers from erectile dysfunction.
The story is about a boy Mudit Sharma (Ayushmann Khurrana), a Gurgaon Boy in marketing job, who falls in love with Sugandha (Bhumi Pednekar). Shy of nature, Mudit tries all the possible ways to talk with her but fails. Finally, he decides to send her an online marriage proposal. After meeting , both realise that they love each other and decide to get married.
But one day, when Sugandha’s parents are out of town, Mudit and Sugandha try becoming intimate and when they finally land in bed, Mudit says that he needs to use the washroom. But when he comes out, he takes his shirt, wears it and starts to leave. When Sugandha asks what happened, he without saying anything, simply signals his problem with the help of a biscuit, making Sugandha realise that Mudit suffers from Erectile Dysfunction.
Mudit and Sugandha try different ways to solve the problems but fail, and when Mudit senses the marriage is near, he decides to cancel it. They both get into heated argument and Sugandha leaves saying that she will be waiting for him and Baraat.