The fate of four friends, who work at a garage, witness drastic changes after they lock horns with a dreaded gangster in town

Raghava (Lawrence) is a happy go lucky guy who loves to play cricket but is a chicken at heart. The very mention of the word ghost gives him shivers so much that he sleeps with his mom (Kovai Sarala). He is also in love with Priya (Lakshmi Rai). However, an attempt to play a cricket match in an unused ground leads Raghava to get something dark to his home. The dark spirit begins to cause few weird things at home and one day it enters the body of Raghava which goes on killing few specific people. Who is that evil spirit? Why is it killing few people? Can Raghava get rid of the spirit? All this forms the rest of the story.

Ram's friends hire Maggie, a call girl, to help him get over his wife, who mistakenly believes him to be a philanderer. However, they get in trouble when Maggie ends up dead.

A conman gains the power to see and communicate with ghosts and decides to use it to make money. His happy-go-lucky lifestyle goes for a toss when a ghost who is his look-alike approaches him with an offer.

A violent college student softens his tough exterior when he falls in love with a shy Brahmin woman. Just as the ice between them begins to melt, he's attacked viciously and loses his mental stability.

A goon, who dreams of making it big in life, a student leader, who strives to keep politicians away from college election and a third guy who wants to settle abroad. Their lives change after an incident on a bridge.

Despite qualifying for armed force, Karthik ('Jayam ' Ravi) prefers to be a traffic cop in Ooty as he believes that such a no risky job would help him get enough time to look after his cute little sister Vidhya (Baby Anikha). Karthik also has a short lived one side love story with Renu (Lakshmi Menon), who is a doctor. When a hazardous chemical in the nearby industry gets leaked, a dog consumes it and turns into a zombie. As the dog bites a watchman, he too becomes a zombie and eventually, the virus spreads rapidly across the town. Can Karthik save his sister and the city ?