Thendral Vanthu Ennai Thodum

The story starts with an educated woman Abhinaya, who maintains her traditions. She meets Vetri, a village goon who isn't aware of the importance of marriage procedures, when she helps a couple get married in the temple. A samiyar encounters her and appears one day and predicts that Abhinaya will wed an rogue, whether they had previously given it any credence. Abhi was attempting to help a couple who had secretly wed. Before leaving, Vetri pulls a thaali and fastens it around Abhi's neck after Abhi slaps Vetri in the heat of their argument. He later regrets it, though. To the dismay of her father and Vetri, Abhinaya was forcibly ushered into the slum as a newlywed bride despite her initial astonishment and anguish. Vetri dismisses Abhi's attempts to help him comprehend the meaning of love. But Abhinaya discovers the truth about Vetri and the reasons behind his abrupt change, as well as the fact that Radha, a lifelong acquaintance, is secretly in love with him. However, destiny causes several things to happen in the lives of Vetri and Abhinaya that finally lead to the two of them becoming close. Additionally, Vetri mentions that he likes Abhinaya in the scene where she was taken away. Finally, Vetri and Abhinaya are forbidden from entering the house. However, Vetri's other family members agreed to let them live with them on the terrace next to their house. Will Vetri and Abhinaya be acknowledged as a couple and live together?[4] Whether the two can settle their differences and unite forms the remainder of the story.

After being separated for years, Abhi and Vetri cross paths again. When destiny offers a second chance to the couple, will history repeat itself?[5]

In Andhra Pradesh, Abhi is now a collector, whereas Vetri was recently let out of prison after serving his time. When he is released from prison, he wants to visit Abhi and his daughter but learns that Abhi has moved away and that his daughter was aborted. As a result, Vetri adopts new negative habits and returns to his previous brash behaviour.

After fighting with a powerful bigwig in Andhra Pradesh, Abhi is given a government transfer back to Kanchipuram, where it is found that Abhi didn't abort her child, Sudar, who is still alive. Vetri then becomes a major rowdy in his hometown of Kanchipuram. When a riot occurs at a temple and Vetri is called upon to open it against Abhi's order, the two cross paths after 8 years as Abhi hears about the riot and tries to settle it. Abhi ends up getting Vetri arrested and he ends up getting out on bail with the help of Kanmani ( a girl who he educated to become a lawyer, and one-sidedly loves Vetri). After the case is closed, Vetri challenges Abhi to defeat him whilst Nandhini wants to tell the truth that she killed Bhavani to Abhi but Vetri intervenes and tells her to leave.

Paramu plots to have Vetri killed as revenge for killing his twin brother, Bhavani. When his goons try to finish him off, Sudar warns Vetri and he fends off the rowdies. However, Sudar is injured as a result but this makes Vetri appreciate her highly. They spend a lot of time with each other and form a strong bond, whilst not knowing that Vetri is her father and Sudar is Vetri's daughter. Sudar also makes Vetri give up his bad habits, smoking and drinking, and he becomes a slightly changed man.

How Sudar reunites Vetri and Abhi forms the main plot of the second part of the story.

• Pavithra Janani as Abhinaya "Abhi" Vetriselvan, Vetri's wife, the eldest daughter of Judge Sankaranarayanan and Padma, Sudar's mother
• Vinoth Babu as Vetriselvan "Vetri" Aranganathan, Abhi's husband, the youngest son of Aranganathan and Kamala, Sudar's father
• Sudar Sam as Sudarvizhi Vetriselvan "Sudar", Abhi’s and Vetri’s daughter

• Shaurya Shashank Ramesh in a dual role as
  • Bhavani, Poongavanam's nephew (2022) (antagonist, dead)
  • Parameswaran "Parama", Bhavani's identical twin brother, Radha's husband. He wants revenge on Vetri initially for ‘killing his brother’, but then also sees Abhi as an enemy since she keeps stopping his illegal activities and was also Vetri’s wife. (2022–present) (antagonist)
• Maria Juliana as Kanmani, a lawyer who loves Vetri one sidedly and lives with her father and Vetri’s gang. She will go to any lengths necessary to ensure that she is with Vetri and wants to cut Sudar and Abhi out of his life so she can live with him peacefully. (2023-present) (antagonist)
• Tharshika as Radha, Vetri's ex-fiancé and Parama's wife. She has hatred for Vetri for leaving her marriage at the last marriage and bringing shame to her. However, she seems to have left her hatred for Abhi aside and works with her professionally as a councillor. (2021–present) (antagonist)
• Krithika Laddu as Viji, a 'sister figure' to Abhi and Sudar's carer when Abhi is busy with work. She finds out that Vetri was Abhi’s husband and seeks to reunite the two so Sudar has a dad and mum. (2023-present)
• Sasindhar Pushpalingam as Tharun, a physician from Hydrabad, who helped Abhi when Vetri was serving his prison sentence. He finds out through Abhi that Vetri was her husband and supports her in her decisions. Kanmani lies to Vetri and tells him that Tharun is Abhi's husband, when it isn't true. Abhi sees him as a brotherly figure.
• Supergood Kannan as Poongavanam, a local politician and Vetri's mentor turned enemy (2021–2023) (dead)
• L. Raja as Aranganathan "Ranga", Vetri, Kalai and Anbu's father (2021–2023) (dead)
• Priya as Kamala Aranganathan, Aranganathan's wife and Vetri, Kalai and Anbu's mother (2021–present)
• Sathya Sudha as Kalaiselvan "Kalai", Vetri and Anbu's elder brother (2021–present)
• Raj Kumar Manoharan as Anbuselvan "Anbu", Vetri's elder brother and Kalai's younger brother (2021–present)
• Remyaa Joseph as Nandhini, Kalai's wife, Vetri's eldest sister-in-law and Bhavani's Murderer (2021–present)
• Syamantha Kiran as Chithra, Anbu's wife and Vetri's second sister-in-law (2021–present) (antagonist)
• Auditor Sridhar as Judge Sankaranaryanan, Abhinaya's father (2021–present)
• J.Lalitha as Padma, Abhi's mother (2021–2023) (dead)
• Anjali Varadharajan as Sivagami, Abhi's aunt (2021–present)
• Shravnitha Srikanth as Deepthi, Abhinaya's sister (2021–present)
• Dev Anand Sharma as Surya, Abhinaya's cousin, Sivagami's son, Sankaranarayanan and Padma's nephew (2021–present)
• Bharani Elangovan as Varsha, Surya's wife, Tharshan’s sister (2021–present)
• Krishna Kishore (2021) / Manoj Kumar (2022–present) as Tharshan, Abhi's ex-fiancé, lawyer
• Vasu Vikram as Chidhambaram, Varsha and Tharshan's father
• Rekha Suresh as Chandra, Tharshan's mother
• Gowthami Vembunathan as Eeswari, Radha's mother
• Kausalya Senthamarai (2021) / S. N. Parvathy (2022) as Vetri, Kalai, and Anbu's grandmother, Ranga's mother
• Premalatha as Poongavanam’s wife
• Dhanasekar as Gopalkrishna, Vetri's 'chittappa' and fellow henchman
• Paranthaman as Quarter, one of Vetri's henchmen
• Krishna Kumar as Pei (Peiathevan), one of Vetri's henchmen

• VJ Vishal as Shakthi, Vetri's childhood friend, Abhi's cousin (2022 - short cameo)