A wealthy but suicidal industrialist, Aditya (Shahid Kapoor), is heartbroken and absentmindedly boards a train to escape his depressing life. On the journey, he bumps into Geet (Kareena Kapoor Khan), a Punjabi chatterbox brimming with energy and optimism. She is determined to get Aditya to loosen up. What follows is a series of misadventures centered around a girl who just can't seem to stay out of trouble and a man who feels obliged to look out for her.