Nalla Thanka , the only sister of Nallannan , the King of Madhurapuri, is wedded to Somanathan , the king of the neighbouring kingdom Ratnapuri. Alankari, the wicked wife of Nallannan becomes envious of the prosperity of Ratnapuri and the happy married life of Nalla Thanka.
Estate owner Kurup seduces and then disowns a village girl, Devaki. This sparks off a revolt in the village. A workers union leader Gopi leads the revolt. Kurup goes on to marry Radha, an educated and socially committed worker. How Radha comes to understand the wickedness of her husband and frees...
