A war between Cheras and Pandiyas restarted during the reign of Pandiyan King Arikesari. When Arikesari partially retires, his son Ranadheera Pandiya takes charge of the army. Meanwhile, the Cheras ask help from Cholas to stand against Pandiyas and a plan to kill Ranadheera Pandiyan was executed. Will the plan be successful?
Set against the backdrops of Kanyakumari, the film revolves around an undercover agent (Gautham Karthik) crawling into a mafia group headed by AGR (Silambarasan) to know the whereabouts of missing Chief Minister (Santhosh Prathap). What unfolds next is a series of unexpected twists and turns.
When Arun (Udhayanidhi Stalin) comes across an innocent woman in an unstable condition struggling to drive her car back home, he reaches out for help, only to find her dead body, the next morning in the car. What happened to the lady? Who killed her? What's the mystery lying beneath?