The series is set in Kanchipuram and begins with the introduction of the protagonists, Abhinaya "Abhi" Sankaranarayan and Vetriselvan "Vetri" Aranganathan.

Abhi, the eldest daughter of Sankaranarayanan "Sankar," a reputed judge known for his honesty, integrity, and discipline, lives with her mother Padma.

Her marriage has been arranged with her childhood friend Darshan, a lawyer who is the brother-in-law of Surya, Abhi's cousin and a businessman managing Sankar's enterprises.

Vetri and Poongavanam use their influence to combat illegal activities such as drug and liquor smuggling, kidnapping, and prostitution, aiming to benefit the community.

Vetri has two elder brothers: Kalaiselvan "Kalai," who is unemployed and lacks steady employment, and Anbuselvan "Anbu," a real-estate broker.

Simultaneously, Vetri heads to the same temple on Poongavanam's orders because his driver has eloped with a minister's daughter and plans to marry her there.

In the midst of their argument, Vetri takes a thali from the temple deity (Thirunankata Amma) and ties it around Abhi, arguing that it is merely a chain.

Abhi's family and Vetri's gang, which includes Gopalakrishna "Chithapu," Peithevan "Pei," Quarter, and Seenu, are shocked by his actions.

Refusing to remove it, she leaves her home, angering her father, who disowns her, along with most of the family except Darshan, Padma, and her widowed aunt Sivagami, who is Surya's mother.

Over the following months, Abhi tries to reform Vetri and help him understand the concept of love, but he angrily rebuffs her efforts and refuses to acknowledge her as his wife.

Kamala, Vetri, and Chitra oppose Abhi's return to the house but reluctantly allow her to stay after Aranganathan intervenes on her behalf.

Previously, Vetri was an academically brilliant student whose success brought joy to the family, especially Aranganathan, who favored him as his favorite son.

Tearfully, Abhi reluctantly departs Vetri's home and returns to her family, where she is welcomed back by everyone, including Sankar and Surya.

However, when Vetri becomes personally involved in the activities of a powerful local don named Ponnaiya, even going so far as to severely injure him, Abhi convinces him to return home.

Bhavani, a hardened criminal, engages in illegal activities such as drug and liquor smuggling, kidnapping, etc., without his uncle's knowledge.

Distraught by the act of taking another person's life, even an enemy's, Vetri decides to keep the murder a secret from Abhi and everyone else and proceeds with the wedding the next day.

Promising Nandhini to keep her secret, including from Abhi, Vetri falsely admits in court that he killed Bhavani in self-defense.

Devastated by this revelation, Vetri's love for Abhi turns into profound hatred, and he leaves her house, refusing to continue searching for her.

Unknown to anyone, including her own family, a heartbroken Abhi spent the next eight years in both Rajasthan and Andhra Pradesh following Vetri's arrest.

Initially failing with Parama's assistance, Ponnaiya orchestrates a plan where his men crash a lorry into the car carrying Abhi and Sudar.

The incident involving Ponnaiya prompts Abhi to seek enhanced security for Sudar and tasks Tharun with finding a new bodyguard.

Abhi initially hesitates to hire Vetri, fearing that Sudar may develop a close bond with him and eventually discover their true relationship.

Viji and Nandhini are shocked upon hearing the news and try to persuade Abhi to cancel the wedding and reconcile with Vetri, but she refuses.

Vetri regains consciousness, confronts the henchmen, rescues Kabilan and Abhi, and retrieves the birth certificate in the ensuing struggle.

Despite being held captive, Radha manages to contact Vetri and informs him about Parama's crimes and Kanmani's plan to harm Abhi and Sudar.

Together with Kabilan, Vetri investigates Radha's murder and Shenbagam's true identity (suspecting Madhu's presence in Abhi's house for ulterior motives).

This series of events brings justice and closure, with Kanmani, Madhu, and Parama facing the consequences of their actions, and Vetri finding vindication while protecting Abhi and Sudar.

She and Kabilan decide to drop the murder charges against Nandhini, while Sankar once again exonerates Vetri from all his cases so that he can pursue his dream of becoming an IPS officer.

[7] Vinoth Babu was cast as the male lead, playing Vetri, marking his second collaboration with Abdul Hafeez after they worked together on Sundari Neeyum Sundaran Naanum.

[8][9] Pavithra Janani was cast as the female lead, playing Abhi, marking her fifth serial after her role as Malar in Eeramana Rojave.