The movie revolves around the lives of three friends - Anjali (Kajol), Aman (Shah Rukh Khan), and Tina (Rani Mukerji). Anjali and Aman were college sweethearts, but Aman went missing during their college days. Years later, Aman returns, and Anjali is now engaged to someone else. Aman's return sparks a chain of events, and the story unfolds as a nostalgic and emotional journey.