As the title goes, ‘Vamsam’, talks about family heritage, traditions involved and the feud existing among various families. This movie talks about one such grudge between two families, the hero’s ‘Eppadu Pattalum Pirpadu Kedathavar’ and the villain’s, played by Jayaprakash, ‘Nanjunda Ma O Si’. The hero is the only descendant of his family. His mother played by Anupama Kumar, brings her son up in a traditional way so that he doesn’t glue to his family’s ancestral violent nuances. Between all this, a love story happens between Arulnidhi and Sunaina, a bubbly, happy yet brave and courageous girl.

A certain incident entangled with revenge and rivalry takes place. The result leads to the clash of the families again. How Sunaina is involved and what happens to the love story forms the rest of the plot. The movie progresses with unusual and unpredictable twists and turns.