Nithya being a college student has been given strict instructions by her father to not get romantically involved with anybody. Chandru however, keeps pursuing her and at one point gives her assurance that he will not tread wrong paths anymore and will strive to be a better person. Nithya is convinced Chandru will keep up his word and she finally accepts him. With their relationship now going strong, Nithya's father comes to learn about the two and their decision. The rest of the plot revolves around whether Chandru and Nithya's relationship is given a nod by her father and what efforts does Chandru make to convince Nithya's father.
Chandru as the unemployed youth has played his part effortlessly while Nithya Shetty looks beautiful in her traditional avatar and does a good job displaying her acting skills.Other characters in the film have done a decent job in terms of their roles.
The film's director G. A. Somasundara has predominantly shot only romantic scenes in the film and in the end this only has turned backfired for him as he has let go his hold in the screenplay completely. A screenplay is the foundation for any film and that is missing here which is the strongest deterrent for the Kadhal Kaalam here. Neither has the film's music nor the background score by S. Jayanathan has done wonders as they are quite average. The only big substantial effort visible in the film is the cinematography by Vijay.
In short, Kaadhal Kaalam is just a shot at romance and nothing more.