Pokkiri Raja

Ramesh, the manager at Paranthaman's office, identifies the culprit among the industrialist's relatives and tightens controls over operations. His vigilant crackdown earns the wrath of Venkatachalam and Chandran, who want to keep their thefts hidden. This sets up the conflict between Ramesh and Paranthaman's family.

Ramesh and Vanaja fall in love despite their initial clashes. Paranthaman learns of Ramesh's supposed indiscretion and fires him the same day, turning the couple's happiness into trouble. The family feud deepens as the industrialist's suspicions grow.

Paranthaman is murdered, and Vanaja sees Ramesh at her house that very night, a sight that will spark doubt and fear. The suspicion immediately turns toward Ramesh and his relationship with Vanaja. The stage is set for a wrongful accusation.

Ramesh is dragged into court and, based on Vanaja's testimony, declared guilty and arrested. He soon realizes she was coerced into perjury, which hardens his resolve to uncover the truth. The man goes from supervisor to inmate in short order.

A month into his sentence, Ramesh meets Raja, a petty thief who looks exactly like him and has just been arrested for breaking into Paranthaman's house. Vanaja had misidentified Raja as Ramesh, which explains the wrongful arrest. They form a plan to bring the real culprits to justice.

Ramesh and Raja decide to team up to expose the real culprits. They plan Ramesh's undercover move to imitate Raja and gather leverage without tipping off the killers. The alliance takes shape inside the prison and the city around it.

With Raja's permission, Ramesh masquerades as Raja for a three-day period to move through the social circle and collect evidence. The disguise lets him operate beyond the reach of guards and suspects alike. The plan hinges on convincing others that he is Raja.

Venkatachalam tries to arrest 'Raja' for escaping, but fails when Raja's lover Rakkayi identifies him as Raja and takes him away. The ruse remains intact, buying Ramesh crucial time. This complication intensifies the undercover mission.

Unaware of the switch, Venkatachalam talks to 'Raja' about Vanaja's impending marriage to his son Chandran. The conversation reveals the family tensions and the stakes involved in the deception. The truth behind the identity swap remains hidden for now.

Ramesh reveals the truth to Vanaja and rescues her from the forced marriage threat, keeping her safe at his mother's house. He also explains Raja's role in this web of deception. The alliance between Ramesh and Vanaja strengthens as they work together.

At his mother's request, and under extraordinary circumstances, Ramesh marries Vanaja. The ceremony binds the couple even as the broader plot inches toward a confrontation with the real killers. The marriage solidifies their partnership against the family threat.

At the end of the three days, Ramesh returns to prison and switches places with Raja. Raja reunites with Rakkayi and recounts that Ramesh took his place, a revelation that pivots the investigation forward. The two men now focus on clearing Ramesh's name.

Ramesh finally obtains bail, largely due to Vanaja's intervention. The release marks a turning point where the couple can push back against the fabricated conviction. The real culprits' trail starts to close in as new evidence emerges.

Chandran and Venkatachalam are revealed as Paranthaman's murderers, and Raja records their confession on tape. The tape is played in court, the killers are arrested, and justice begins to close on the conspiracy. Ramesh and Vanaja's union endures as the legal battle resolves.