Mere Brother Ki Dulhan is a musical romantic comedy movie, which is set amongst upper middle class families in North India. Its topsy-turvy story takes viewers on a fun-filled ride of humour and romance. The story revolves around Khush (Imran Khan), who falls in love with his brother's (Ali Zafar) bride (Katrina Kaif).
When Just Dance judges Hrithik Roshan, Farah Khan and Vaibhavi Merchant asked the stars to perform a scene from the movie. Imran Khan and Katrina Kaif appeared on the stage. Imran proposed Katrina, who was in hurry to prepare for her marriage with his brother. Meanwhile, Ali Zafar entered the scene from the back stage and asked them what was going on between them. Then they replied 'nothing'.
The idea behind Imran Khan, Katrina Kaif and Ali Zafar's performing this act was to convince the story of the film Mere Brother Ki Dulhan to the viewers as well as the Just Dance judges in brief. All the three actors were successful in their attempt. However, the judges applauded their performance and wished them good luck for their upcoming movie.