Brother

Karthik's relentless questioning of social injustices creates friction at home and with neighbors. A confrontation over his apartment conditions alarms his family, signaling that his controversial reputation will shape their days ahead. This opening episode sets the tone for a man who challenges power even within his own circle.

Anandhi takes him to her in-laws' strict, schedule-driven household in Ooty to reform him. The move exposes Karthik to rigid rules, long hours, and a new layer of family scrutiny. The change in scenery tests his resolve and marks a turning point in his relationships.

Archana helps secure him a job as a hospital bouncer, hoping to channel his energy into steady work. He is terminated for confronting a patient's relative about exploiting an elderly man's wealth, illustrating his willingness to challenge unethical behavior. The setback underscores his volatile reputation within the system.

Anandhi then finds him a job as a PT teacher at her school, but he clashes with the math teacher and is dismissed. The conflict highlights his stubborn refusal to compromise on his beliefs, even in a structured environment. The incident deepens the family's concerns about his influence.

The caretaker Keshav arranges a psychiatric consultation with Dr. Phoenix Pushparaja to address the household tensions. A leg injury derails the plan, frustrating Hemamalini and complicating any path toward help. The delay prolongs the underlying turmoil.

Sivagurunathan, the Nilgiris District Collector, takes Karthik under his wing and assigns him to observe village life rather than rule him. This official guardianship gives Karthik access to local issues and a platform to influence the community. It also plants the seeds for future reconciliation.

Karthik witnesses villagers in Pannaikadu protesting for electric fencing against wild animals. Recognizing the collector's inaction, he advises the villagers to threaten self-immolation as a last resort to force action, triggering the rapid installation of fencing. The event marks a pivotal moment where his influence becomes visible.

As tensions rise, the household demands Karthik's expulsion. Anandhi pleads for him to apologize and stay, but Sivagurunathan, Hemamalini, and Aravind publicly humiliate them and force them to leave. The incident damages trust within the family and sets the stage for later revelations.

Kumarasamy reveals that Karthik is adopted and states he will only accept him if Anandhi is reunited with her in-laws. The revelation deepens the family fracture and compels Karthik to seek forgiveness and acceptance from Sivagurunathan's family. The moment reframes Karthik's standing within the household.

Archana, who has developed feelings for Karthik, tries to stand by him and even hints at marriage. Sivagurunathan publicly humiliates Archana, while Dr. Vinay, who has one-sided interest in Archana, twists the moment by proposing marriage for political reasons. The scene heightens the emotional and political entanglements surrounding the couple.

At a press conference, a video praising Sivagurunathan's actions in Pannaikadu, narrated by Karthik, is shown, provoking tough questions about his leadership. Facing scrutiny, Sivagurunathan resigns from his post and Dr. Vinay abandons him after learning of the resignation. Karthik offers help, but Sivagurunathan declines.

On the way home, thugs kidnap and assault Sivagurunathan, but Karthik rescues him, transforming Sivagurunathan's view of him. He finally accepts Karthik as his son-in-law and consents to the marriage to Archana, shedding his arrogance and apologizing to Anandhi. At the wedding, Keshav is revealed as the mastermind behind the kidnapping, and Sivagurunathan forgives him.