Suman, a physical education teacher ties the knot with a cop, Shardul Thakur to escape the pressure of their families for marriage. They live like roommates in a marriage of convenience. The chaos ensues when Suman's girlfriend comes to stay with them while the increasing pressure from families of having a baby further complicates things.
Shardul (Rajkummar Rao) is the only male child born after a long line of female offspring in his family. To add to this tragedy, he is surrounded by women at work, too — being the only male cop. However, when Suman Singh (Bhumi Pednekar), a school PT teacher, comes to him to file a harassment complaint, Shardul’s life takes a different turn altogether. This boy-meet-girl situation turns into an opportunity for both to ease out the shared societal and family pressure of marriage and they both decide to enter a marriage of convenience. Wedding bells ring for them, but there’s more than just what meets the eyes: a lie, both are hiding from their respective families. Set in between two crazy clans, Badhaai Do is a dramedy that ensues when two unlikely people tie the knot and start getting thrown into one hilarious situation after another. Amidst finding themselves in this comedy of errors, they emerge forming the strongest of bonds in their unusual relationship.