An ornithologist who commits suicide returns as fifth force to wreack vengeance on mankind for harming birds with mobile phone radiation. The only thing that is standing in his way is 2.0, the upgraded version of Chitti, the robot.
What would it be like if the characters from Endhiran find themselves inside the plot of a typical Shankar movie? 2.0 is what you would get. Using his pet theme - a wronged individual taking revenge on the people who ruined his life ( or in this case, the birds he cares for) - the director gives us a film that is part sci-fi, part horror, part vigilante movie and part special effects spectacle.