Anbarasu(Madhavan) who likes to be referred to as A. Ars is a high-flying ad-filmmaker working for a multinational company. On assignment scouting locations in Bhubaneshwar just four days before his wedding he is stranded at the airport as Bhubaneshwar is lashed by heavy rains and flood. With no place to go he finds himself in the company of Nallasivam(Kamala Hassan) who seemingly has an answer for every question and an uncanny knack for irritating Anbarasu. Together the duo set off in the direction of Chennai and on the trip Anbarasu finds himself learning a lot about love and life.