A skeptic crime branch Inspector Rishi Nandhan, assisted by two sub-inspectors Ayyanar and Chitra, investigates a series of bizarre murders in a small mountain village, supposedly committed by a deadly forest spirit called the Vanaratchi.

When mysterious deaths begin to plague a mountain village, the local people begin to fear that it is the Vanaratchi, a demonic forest spirit that is committing these murders. A skeptical inspector, Rishi, along with his sub-inspectors Ayyanar and Chitra, is tasked with the challenge of uncovering secrets and finding out the truth behind these inexplicable paranormal events. The trio not only navigates through challenges in their personal lives but also battles supernatural forces at play, which test their resolve and abilities to the limit.