When a wildlife photographer’s mysterious death is blamed on a deadly forest spirit called Vanaratchi, Crime Branch Inspector Rishi Nandhan is sent to Thaenkaadu to investigate the case, along with sub-inspectors Ayyanar and Chitra.

The lack of physical evidence and the supernatural phenomena around the murder case baffles everyone. Rishi is haunted by a mysterious ghost from his past. Meanwhile, the Vanaratchi claims another victim.