The family of a former agent (Kamal Hasan) becomes the victim of a drug cartel don Santhanam (Vijay Sethupathi). It's a revenge drama but the protagonist says that he has a social bent in going hard against the drugs and the peddlers.

Amar (Fahad Faasil) appears as a sleeper cell who assists the top cops in the crime investigation.

The entire theme revolves around these main characters while the personal and family drama of each gets blended in the right proportion.

Finally, who ends who and in which manner forms the climax.