Although Karthik (played by "Jayam" Ravi) is qualified to join the armed forces, he prefers to work as a traffic police officer in Ooty because he believes that such a risk-free job will help him have enough time to take care of his lovely little sister Vidhya (played by Baby Anikha). Karthik also has a brief one-sided love story with Doctor Renu (played by Lakshmi Menon). When a hazardous chemical in a nearby industry leaks, a dog will eat it and turn into a zombie. When the dog bit a guard, he also turned into a zombie, and ultimately, the virus quickly spread in the town. Can Karthik save his sister and the city?