A lorry driver ends up in possession of an unexploded bomb that is being sought after by both the cops and pro-peace activists.

Oru Naal Koothu addresses marriage from the perspectives of different people. The story is based on the experiences of the director and focusses on issues related to a wedding.

The story revolves around a woman who has been forced to serve as a sex worker.

The film is about a 50-year-old vanity van owner, Caravan Krishnan, who goes out of his way to help those in inter-caste relationships sort out their issues, and makes a point against caste and religion-based division.

A cop, who sets out to solve the mysterious death of infants in Kumbakonam, realises that a few bigwigs are behind the crime.