Maari (Dhanush) is a local don, 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. Now, Maari the goon with a large heart returns from jail, only to realize that his area is now under the control of Arjun.
