Bunty (Aditiya Roy Kapoor) lives a really bad life, although he believes that if his parents' marriage would have been a love marriage, his life would have been perfect, but it was actually a arranged marriage so his parents (who are old and aging), dad Kishen (Akshay Kumar) does not get along with his mum Mala (Aishwarya Rai). Bunty always runs away from his girlfriend, Tanya (Sudeepa Singh), whenever she mentions marriage, but he pretty much has developed a marriage phobia due to his parents' arguments. One day, Tanya's grandfather, Professor Anthony Gonsalves (Randhir Kapoor), gives him the choice to either marry Tanya or forget her forever. Bunty sneaks in and steals the Professor's time machine late at night to transport himself to the 1970's. Now he will not leave until he makes his parents' marriage a love story.