The film is based on Sunil Gangopadhyay’s novel ''Hirak Deepthi''. Dr. S.R. Nathan (Mammootty) is a world-renowned rich professor of economics. A theorist to the core, he always harps on his pet topics of poverty and developmental issues that concern the developing world. He is a loner who is a drunkard. He is also a chain smoker and a Promiscuity#Male promiscuity. Sometimes he's close with pornography during stress.