Kollywood actor Karthi will be seen in a flick titled 'Naan Mahan Allai'. The flick which carries the name of an yester year flick of super star Rajanikanth will however be totally different from the original one. The film will have Tollywood actress Kajal Aggarwal in the lead role. The music of the flick will be scored by Yuvan Shankar Raja. "The film is about a callous youth, who leads a happy life. An incident changes the course of his life", says Karthi about his flick. The flick is produced by K E Gananavel Raja of Studio Green and is directed by Suseendran.