The film starts with Alex Pandian (Karthi) and Divya (Anushka Shetty) jumping off a train in an attempt to escape the goons who are seeking to kill them. Three days later, Alex enters Kaalayan's (Santhanam (actor)) house. Meanwhile, Divya is receiving treatment whilst Alvin Martin (Milind Soman) and Dr. GKM (Suman (actor)) are in search for the two. Upon finding Alex and Divya, the goons chase them. Kaalayan demands to know who Divya is. Divya happens to be the daughter of the Chief Minister (Visu). Alex, a local thief, is asked to kidnap Divya for three days so that the CM would sign the papers which would allow Alvin and GKM to distribute fake medicines with devastating side effects. Alex brings her and keeps her as a hostage in a forest. On the third day, as Alex is driving back, Divya explains the reason for why she was asked to be kidnapped and thus requests him to take her back to her father. Alex decides to save Divya. The film shifts back to the present and by now, Divya has fallen in love with Alex. As fate would have it, the goons arrive at their hiding place. The film ends with Alex killing the villains and reuniting with Divya.