Manimaran (M. G. Ramachandran), is a doctor living in the country of Neidhal Naadu with his sidekick Azhaga (Nagesh). He helps cure the illness of one of the rebels against the dictator (R.S. Manohar) of Neidhal Naadu. The ruler's guards arrest the rebels, along with Manimaran for helping them. Manimaran and the rebels are sold as slaves by the ruler to the nearby island called Kanni Theevu (Tamil for Virgin Islands), ruled by Sengappan. Manimaran leads the slaves, and fights for their rights.