Deepti (Kareena Kapoor Khan) and Varun Batra (Akshay Kumar) are a posh, high-flying married couple, living in Mumbai and are much involved with their respective careers. Deepti also has her heart set on having a baby and after trying for a few years and then, some prodding by the family, both Varun and she decide to consult one of the best fertility specialists in the city. The doctor advises IVF and they are ready for it. Only hitch, few days after the procedure is through, Deepti and Varun are told there has been a sperm mix-up with another couple with the same last name. Enter ‘the Batras from Chandigarh’ into their lives. Honey (Diljit Dosanjh) and Monika (Kiara Advani) are a loud Punjabi couple and now it’s a complete clash of sensibilities between the two sets of Batras. As both Deepti and Monika soon find out they are pregnant, the rest of the film forms how the couples come to terms and deal with this unusual situation.