Nallasivam (Kamal Haasan) and Anbarasu (Madhavan) are drawn together by the strings of fate after they come into contact at the Bhuvaneshwar airport. Anbarasu is an advertisement director, while Nallasivam is a trade unionist. Fate entwines their travel plans, and they end up travelling to Chennai together. In the course of their journey, Anbarasu, born with a golden spoon, is touched by the realities of the sufferings of a normal human being when he witnesses the deceased and the injured during a train , and he volunteers to donate his blood, which is of a very rare group, despite his fear of blood. The flashback of Nallasivam is recounted during one of their journeys. Watch the full movie to know the rest of the story.