A rich girl is guarded by her possessive brothers due to an astrologer's prediction, that she will marry a man from a lower caste, against their wishes. One day the bodyguards get into a fight with Ramachaari (Ravichandran), who defeats them. Impressed with Chinna Thambi's naivety and fighting skills, the Brothers hire Ramachaari to be Nandini's bodyguard and butler. Later they both falls in love with each other. She convinces Ramachaari to tie a mangal sutra around her neck which will protect him from her brothers. without realizing the sanctity of the act does as told and doesn't realize he is now married to her. Finally Ramachaari stood against the brothers and protect his mother & his wife Nandini.