Robot is said to be the most expensive film in the history of indian cinema. Co-starring Aishwarya Rai Bachchan, a tale of Robo romance, featuing state-of-the-art special effects, this tale of a man-machine was simulateously released in other language. Rajnikanth performs a dual role, playing both the scientist Dr.Vaseegaran upgrades Chitti's software because of which he is able to comprehend and simulate human emotions.The plan backfires as robot falls in love with the scientist fiancee. Meanwhile, Dr.Bohra, the rival scientist, tries hard to get control of Chitti and before he gets away with it. Dr.Vaseegaran will have to fight and prevent his super-powered creation falling into the wrong hands