A few individuals in the medical profession are murdered or kidnapped, and the cop investigating the case suspects a doctor and arrests him. But is he the one who is behind these crimes? And why are they being committed?

Sura is a story that is set in Yaazh Nagar, a fishermen hamlet in coastal Tamil Nadu.Sura (Vijay) is born and brought up here in the company of his friend, Ambar La, alias Umbrella (Vadivelu). Meanwhile, he comes across young bubbly Poornima (Tamannaah) who chooses to end her life unable to cope up with the death of her pet dog. Slowly, she becomes attracted towards Sura thanks to his good deeds. They start romancing. When things seem to go well, trouble enters in the form of a greedy and corrupt Minister Samuthira Raja (Dev Gill). He wants to usurp the land where these fishermen live. His attempts to take away the wealth is resisted by Sura. They cross fight each other. The Minister hatches a conspiracy to bump off Sura with the help of his Ministerial post and authority and sues him. Sura takes on them single-handedly and finally destroy his bad intention and help his town fishermen to get their own house as he wished