Idhu Kadhala is about couples love and hate relationship between Ashwin and Shruthi. Both of them are opposite to each other. A relationship is very important for Shruthi but for Ashwin is opposite to her believes. Shurthi having a fun loving life and Ashwin thinks that everything can be achieved by money. Ashwin remarries Shruthi even after the opposition from his paternal grandmother and Shurthi wins the Mrs. India with Ashwin. Finally both of them live a happy life along with adopted son.