Handsome world traveler Raj (Ranbir Kapoor) recounts a decade of casual romance, inlcuding a tryst with the beautiful Mahi (Minissha Lamba) in Switzerland and with model Radhika (Bipasha Basu) in Mumbai. Now living in Sydney, Australia, the historically commitment-phobic Raj finds himself wanting to settle down for real with his latest love, gorgeous taxi driver Gayatri (Deepika Padukone). But, as the two grow closer, Raj worries that his promiscuous past will come back to haunt him.