Duraisingam (Suriya) has gone undercover and is working as an NCC officer in a school in Thuthukoodi. He feels something fishy is happening in the seas around the coastal town. There are two bad guys Bhai (Mukesh Rishi) and Thangaraj (Rahman) who control the coastal belt with their nefarious activities. Meanwhile Sathya (Hansika) a student in the school falls for Duraisingam due to his daring acts. However, he still loves Kavya (Anushka) and is waiting to marry her. Meanwhile the bad guys join hands with an international drug dealer Danny (Danny Sapani) to flood the market with brown sugar. How our one-man army defeats the evil forces is what the rest of the film is about.
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