| Director | B. R. Panthulu, B. Ramakrishnaiah Panthulu |
|---|
Manimaran is a doctor living in the country of Neidhal Naadu with his sidekick Azhaga. He helps cure the illness of one of the rebels against the dictator 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 a nearby island called Kanni Theevu (Virgin Islands), ruled by Sengappan. Manimaran leads the slaves and fights for their rights.
Poongodi, the princess of Kanni Theevu and niece of Sengappan, the guardian of the orphaned princess, falls in love with Manimaran at first sight. Simultaneously, her servant Thenmozhi falls for Azhaga, after initial arguments. Despite the differences between Poongodi and Manimaran, Poongodi tries to woo him on many occasions. She even offers freedom from slavery only to him, who rejects the offer demanding freedom for all of the slaves. Meanwhile, the island is attacked by pirates headed by a captain. As Sengappan's troops are out of the island on another assignment, Sengappan pleads with Manimaran and the other slaves to help him. Manimaran demands freedom slavery in return for fighting the pirates, only to be betrayed later.
The slaves make an escape plan of their own and successfully take over the pirate ship, with whom they fought earlier. Manimaran tells the pirate captain about their plight and asks him to help them reach Neidhal Naadu. The captain seemingly agrees, while actually taking them to his pirate island and holds them captive. He coerces them to work for him as pirates, or Manimaran will see all of his other men die. With no other option, Manimaran assents for the safety of his men.
During one of his pirate hunts, Manimaran finds Sengappan and Poongodi. He brings Poongodi to the pirate island and tries to hide her from the pirate captain, but the pirate captain soon finds out. As per the island's policy, any treasure pirated must be auctioned, and so Poongodi is also auctioned. Manimaran bids the highest, buys her, and keeps her with him. Manimaran marries Poongodi, and as per the pirate island's laws, the pirate captain cannot attempt to separate a married couple. He attempts to take Poongodi by force, gets defeated by Manimaran in a sword fight, and reforms. He accompanies the slaves led by Manimaran, to achieve their goal of freeing Neidhal Naadu. In the ensuing war, the dictator is defeated but tricks into arresting them instead. However, in his court, the dictator begs Manimaran to take over the throne. Manimaran politely refuses, citing his intention to continue his work as a doctor, serving the people.