Ilango's path repeatedly crosses with that of Chellappa, a small-time thief and broker, leading to a series of comical misadventures.

Ilango's mentor identifies Nandha "Nandhu", on the road and takes pity on him, exclaiming he hails from an affluent family.

En route, Nandha takes Kavitha to meet a family he is acquainted with – the employees of his father's company, who have lost their sole breadwinner.

Ilango, unaware of Nandha's true identity, mistakenly assumes he is impoverished and devises a plan to separate his sister Kavitha from him.

With Chellappa's assistance, Ilango attempts to discredit Nandha by planting cannabis in his possession and hiring a prostitute to tarnish his reputation.

Witnessing this reunion, Ilango experiences a profound realization that wealth is not the only important aspect of life.

Disguising themselves as caterers, they infiltrate the wedding hall and cleverly substitute Kavitha for the original bride.

15 days of shooting took place at a busy housing complex in K K Nagar while two songs were picturised in Kodaikanal.

[3] Malathi Rangarajan of The Hindu wrote, "Don't look for coherence or logic in "Kundakka Mandakka", because most of the time it is inane humour that rules.