Kaathala Kaathala is a Tamil language film directed by Singeetham Srinivasa Rao and produced by P. L. Thenappan. The film stars Kamal Haasan, Prabhu Deva, Soundarya and Rambha in the lead roles with an ensemble cast in supporting roles. The film released on April 10, 1998, to positive reviews and became a commercial success.
Janakis father, played by the music director M. S. Viswanathan, rejects Sundaralingam. Sundari convinces Janaki to write letters falsifying Sundaralingams rise to fame and big money, eventually lying that Janaki amp Sundaralingam now have a son, in order to win over the parents with sentiment. Janakis dad, worried that his grandson might be brought up poorly, arrives at a mansion that has been set up to look like Sundaralingams new property, along with her mom Srividya. Meanwhile, Sundaris dad Moulee also makes an unexpected stop there to check on his daughter.A small misunderstanding during introductions and progressively bigger lies to cover the initial lies lead to a sidesplitting laugh riot. How those four eventually overcome their problems and find happiness forms the rest of the story. ........
Source: Wikipedia