Diya (Aishwarya Rai) is an intelligent university student with strong views on love and marriage. She spends much of her time at an orphanage in Coorg, helping her "Uncle" (Amitabh Bachchan) with the children living there. The story begins when Diya travels to Mumbai to write exams. While there, she stays with her father's friend, and meets their lighthearted, free spirited son, Arjun (Vivek Oberoi). His views on love and life are completely different to hers. The pair start spending an increasing amount of time with each other and throughout all their arguments and conversations, they soon fall in love. Diya is more open about professing her feelings, while Arjun is reluctant and does not disclose his true intentions. Diya is left feeling heartbroken.