Annasamy is an uneducated villager who wants to marry his cousin Sarasu. She is a college student in the city and his uncle insists on Sarasu's approval before going ahead with the wedding. Annasamy heads to the city to find her and befriends Usha in the process. Together they find Sarasu who secretly married club singer Mahesh and has been abandoned by him. Annasamy is determined to get them reunited but learns that Mahesh is now in love with Meenu. They also learn that Sarasu has a heart ailment that will require expensive surgery and her illness is the reason Mahesh left her. In a bid to earn this money, Annasamy agrees to work for the police by posing as the wanted criminal Raja as the two look exactly alike. Tiger is the head of a large criminal organisation and is looking for an expensive and rare jewel encrusted crown. Raja and Meenu both work for him though both have questionable allegiances. There are several different factions operating to gain the crown and many spies within each. In the midst of this, Raja realises he's being impersonated and convinces everyone he is the real Annasamy. As the characters try to get their hands on the crown, more confusions rise.
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