Maari (Dhanush) is a local don. According to popular hearsay-eight years back, Maari had murdered another powerful goon in that area after which he took over as local don. When Arjun (Vijay Yesudas), a cunning cop gets transferred to the area, he tries to collect enough proof to put Maari behind the bars with the help of Sridevi (Kajal) who has her own reasons to hate the don. Now, Maari the goon with a large heart returns from jail, only to realize that his area is now under the control of Arjun. What happens next ?