Kanne Madanguka movie portrays the life of a couple Bhagyanathan and Vishalam (Murali-Shobha Mohan) whose sole aim in life is to educate their daughters, Karunya (Navya Nair) and Soumya (Baby Neeraja). An apparently well-meaning relative comes with an offer of a job for Karunya, which the family cannot refuse.
While things start looking up for the family, the communication from the daughter peters off. The family is shell-shocked when the mother finds a striking similarity between the daughter and the girl behind the bars in a local police station.
Despite the girl calling herself Shweta, we know that this is not a case of mistaken identity but one of masking the true self.