The film starts with Alex Pandian and Divya jumping off a train in an attempt to escape the goons who are seeking to kill them. Three days later, Alex enters Kaalayan's house. Alex's playful attitude and closeness with Kaalayan's three sisters irritates him, and he makes many attempts to evict Alex from his house, but it only makes the bond between Alex and the sisters stronger. Alex also comes into conflict and shaves the head of a local goon, whose brother Parthiban swears revenge on him, but later, it is revealed like the movie paruthiveeran, that Alex and Parthiban are old friends, and they come to terms. Meanwhile, Divya is receiving treatment, whilst NRI chemist Alvin Martin and corrupt doctor GKM are in search of 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. 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 uniting with Divya.