Beginning with a string of murders in the city, a group of guys in masks claim responsibility for them and declare it their battle against the system. An undercover agent team led by Amar (Fahadh Faasil) is brought in by Police Officer Jose (Chemban Vinod Jose), who begins investigating Karnan (Vikram) and his son cop (Kalidas).
The largest drug dealer in the city, Sandhanam (Vijay Sethupathi), operates his operation out of his home with the help of his three wives and other family members. Santhanam is under intense pressure from his boss because 900KG of base ingredient for cocaine went missing. When Vikram and Bejoy arrive, Amar solves the complicated puzzle (Narain). The rest of the story is told in action and requires a huge screen to really appreciate the thriller screenplay once Vikram tracks down Sandhanam and discovers the drug mafia gang leader
