Ranjith (Ranjeet) plots to steal the temple jewels in the town of Manimangalam with the help of the temple's dharmagatha (V. K. Ramasamy) and townsman Nanjappa (Radha Ravi). Their initial attempt is foiled by Manimaaran (Vijayakanth), the son of the periya pannaiyar, Dharmalingam (V. S. Raghavan) and Nanjappa's nephew. The trio are forced to wait until the next year when the temple festival takes place again to attempt to steal the jewels. Pandiyan (Sivaji Ganesan) is the village president and lives in Manimangalam with his sister Meenatchi (Raadhika). He was engaged to marry Gowri (Sumithra) but he called off the wedding when he learned his horoscope dictates his wife would die prematurely. Gowri has refused to marry anyone else and remains a major part of Pandian and Meena's lives. Pandian also has a long-standing feud with Dharmalingam that started when he won the post of village president. Manimaaran and Pandian both inadvertently continually foil the plans of the trio to further their plans to learn more about the temple. The police also become interested and send police officer Shankar (Jaishankar) undercover to the town. He secretly works to protect Pandian and Manimaaran from falling victim to the trio. More problems arise when Meena and Manimaaran fall in love however. Pandian is willing to give his blessings if Dharmalingam will agree to the marriage but the latter refuses. Manimaaran and Meena marry regardless and Nanjappa uses the conflict to his advantage. As the temple festival nears, he kills Dharmalingam and frames Pandian to sow discord between the two in hopes of keeping both distracted. Pandian and Manimaaran must deal with the fallout from Nanjappa's plan and prevent the theft of the temple jewels.