Ralahamy, a member of high status, dies leaving his family in debt after having squandered his fortune through extensive drinking and other vices.

To get back into wealth, Ralahamy's wife Tackla pushes her daughter Ranjani to marry a wealthy older man Victor with a child through an earlier marriage.

In this process, Samson, Ranjani's boyfriend, who had tried extensively to get the family back into good graces going so far as to pay off their debts, is spurned.

Kadawunu Poronduwa was produced by S. M. Nayagam,[1] a pioneer of Sinhala film industry and an Indian citizen.

Half an hour to songs (about ten), another half-hour given to silent background scenes, with an interval of fifteen minutes.Songs of Kadawunu Poronduwa were issued by Parlophone gramophone records with the film release in 1947.