The film tells a story of quadruplets, Michael, Madhanagopal, Kameshwaran, and Raju, all played by Kamal Haasan. Kamal had distinguished each of those characters with his body language and language lingo. Michael has a husky voice, Madan has an English accent, Kameshwaran speaks Palakkad Tamil and Raju speaks Madras Tamil in keeping with their diverse upbringing as per the plot.