The film is based on Sunil Gangopadhyay’s novel "Hirak Deepthi". Dr. S.R. Nathan (Mammootty) is a 52-year old 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, who drinks up to 10 bottles of liquor a day. He is also a chain smoker who smokes up to 25 boxes of cigarettes. Sometimes he's close with pornography, one-night stands, stocking condoms at home, walking naked in the house, masturbation and even hires female prostitutes to come to his house to have sex during stress. He also uses different types of illegal drugs. Sometimes he would faint in the corridor due to heavy drinking and sniffing of cocaine and he regularly goes to the hospital.