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.
Soman is brought up by his elder brother Raju and his shrewish wife Janu. Soman is in love with Lakshmi, the daughter of a poor village performer Kaniyan who belongs to a lower caste. Raju, employed by the zamindar and Janu resent the inter-caste marriage between Soman and Lakshmi.
Mohan the only son of the rich landlord of ‘Lakshmi Bhavanam loses his father in childhood. The manager manages to secure all the wealth of the family, throwing Mohan and his mother out on the streets. Soon, Mohan loses his mother also. Adopted by a kind hearted land lord of ‘Ananda Bhavanam,’ Mohan is brought up along with his children Venu and Sarojam After the death of the landlord, Venu takes charge of the household. Kamalam, the daughter of the wicked manager who cheated Mohan and his family, is married to Venu. It change the life of Mohan.
