Raj (Shah Rukh Khan) is a happy go lucky guy who stays with his father in the UK. He meets Simran (Kajol) who also stays in the UK, during a European train journey along with his friends. Simran wants to live her life before she is married off to her father's friends son in India. Raj and Simran fall in love with one another on the train journey but the latter sticks to her promise made to her father. Simran along with her family goes to India, Raj follows them and tries to gate crash her wedding. But how Raj wins Simran and her family forms the remaining part of this evergreen romantic film.