Saravanan (Dhanush) is a do-gooder who is soft-spoken and admired by one and all. Child Chinna (Vivek (actor)) is the head of the Namitha Fan Club in his area. The two come across Gayathri (Hansika Motwani), the daughter of arrogant businesswoman Rajeshwari (Manisha Koirala). Chinna falls for her, so he tries several plans to get close to her, but in vain. Gayathri falls for Saravanan after he saved her from an accident. Coming to know of their affair, Rajeshwari decides to get them both married. The reason is that she is keen on getting a son-in-law who will always do what she wants and be under her control. However, she is in for a shock when she comes to know that Saravanan has a past. He is a ruffian and is feared by one and all. Now she plans to halt all plans, while Saravanan overcomes her plans with ease. At last, he comes to know that Rajeshwari had humiliated his parents (Pattimandram Raja and Sriranjini (Tamil actress)) when they ask her to accompany them to their village festival. He makes a plan to take her whole family to his village and make them stay there in his ancestral house with the help of Rajeshwari's astrologer (Manobala), and further, he plans to arrange for his sister's (Dr. Sharmila) marriage with Rajeshwari's son. He tricks Chinna to act a wealthy businessman James Pandian, to which Chinna agrees. After some time, Rajeshwari knows the truth about James and insults him and his family in front of the whole village and leaves. Later, she and Gayathri are caught by some goons, so Saravanan saves them and reconciles with his family.