Karthik (Gautham Karthik) is a middle-class boy gifted with extrasensory perception who works at an information technology company. He has a girlfriend Priya (Priya Anand). During school days, he scores good in the exams using his power, so his father (Vasanth) asks him to suppress this power. Then Karthik meets Pandian aka Panda (Vivek (actor)) at his office and befriends him. Panda, a gambling, gets to know about Karthik's power and asks him to play cricket gambling by using his power. Rangarajan aka Rande (Daniel Balaji) is in charge of cricket gambling under an unknown man known as Kumar. Karthik wins a crore in gambling and uses 10 lakhs for his elder sister Gayathri's (Gayathri Raguram) marriage. Panda, Karthik and Sathish (Sathish) go on a vacation to Goa to spend the gambling money. There, Rande threatens Karthik to play roulette in the Casino Royale ship. Initially Karthik hesitates, but Rande threatens him by kidnapping Priya. Karthik accepts to play. By this incident, Priya comes to know about Karthik's power. To train Karthik, Shreya (Taapsee Pannu) comes to help. Karthik plays the game and tricks Rande to take his place in gambling. The casino officials arrest Rande. Karthik, with his money won in the gambling with Panda, Sathish and Priya, escapes and goes back home. Shreya helps Rande escape from guards by the saying of Kumar. Rande traces Karthik and takes him to his place. There, Karthik uses his power to fight Rande's sidekicks and threatens Rande. At that time, a Rolls-Royce Phantom (2003) comes and is revealed that the unknown man Kumar is Pudhupettai (Dhanush), and he asks Karthik to play for him in politics.