The film begins with Aman Thakur (Ranbir Kapoor) returning to India after a decade-long stay in Australia. Aman is a carefree and fun-loving young man who has given up on love after his father's death. He meets Naina Verma (Deepika Padukone), a beautiful and intelligent young woman who is on a mission to fulfill her dreams. The two meet on a bus, and Aman is immediately smitten with Naina's beauty and enthusiasm.