Ayyappan, a police officer, is an upright man who always strives to do the right thing. However, things change when a retired army havildar, Koshy, settles in his village and the two egos clash.

Raghavan, a simple and lonely man, comes out of jail. His life changes after he meets Anjali, a journalist who wants to prove herself professionally.

Three police officers are forced to go on the run when they get tangled in the death of a youth, a few days before the election.

Set in the rural socio-political environment of North Malabar, Kotthu follows two party workers Shanu and Sumesh and how certain party workers are honour-bound to their `acquired` political ideology of revenge killing.

Ravi, a critic, comes across the writings of K T N Kottoor. Highly inspired by what he reads, he travels to a village in Kerala in search of the author.