Petty criminal Naai Sekar kidnaps dogs belonging to the rich in order to collect a ransom, but makes a critical mistake when he abducts the dog of a ruthless gangster.

Kaththi Sandai is the story of a farmer who becomes a Robin Hood style thief for the welfare of his village. He steals from the people who deny his village of its basic needs and uses the money for its development.

Manimaran (Sarath Kumar), his father Poochi (S. V. Ramadas), and his grandfather Nagappan (M. N. Nambiar) are short-tempered persons who beat the villagers for a simple quarrel. Only, Manimaran’s mother, Sivagami (Lakshmi) can control them. Uma (Rajeswari), Manimaran’s sister, gets married to a man of another village. Manimaran falls in love with Vaidehi (Devayani), a Brahmin girl, and gets married to her without her permission. In a fight against Manimaran, the antagonist becomes blind in one eye and decides to take revenge on Manimaran. When Manimaran drives his pregnant sister, the antagonist stops him but Manimaran beats the antagonist and his henchmen. Uma comes too late at the hospital and dies with her baby. Vaidehi leaves their house because of her husband’s behaviour who brings Uma’s death. Manimaran changes his behaviour and tries to convince Vaidehi to come back home.

Shakthi (Jayam Ravi) and Chinnasamy (Soori) are family enemies who fight over an election. During that time, Shakthi falls in love with Anjali (Anjali), whom he later discovers is Chinnasamy’s cousin. When their love rapidly heats up, Shakthi is forced to marry Divya (Trisha). Before starting a life together, Divya tells Shakthi that they must get to know each other, but every time Shakthi tries to do something good, it ends bad. This leads them on a plan for divorce. Shakthi tells Divya to agree and stay for a month with his parents so they will not get hurt over the fact that they made Shakthi marry someone who does not like him. To make this worse, Shakthi’s father (Prabhu) gets Divya to stand for the female election, to which she agrees. When she loses the election, Shakthi’s father hits him. That is when Shakthi reveals how he lost in love and life. Seeing how much he loves and respects his family and how his life has been, Divya slowly starts to like Shakthi. At the end, Divya and Shakthi happily live together while they argue over little things, making their life filled with love. The film revolves around how a couple should compromise when faced in any situation.

Son-in-law makes an attempt to change his mother-in-law’s character to make her to feel that his love is towards her daughter not on her property.

A Chief Minister’s daughter is kidnapped for a price. They do not need money , but their demand is worse.

Thalainagaram dwells on a gang of kind-hearted henchmen who face several troubles after they decide to reform. Right (Sundar C) and Balu (Bose Venkat) work as henchmen to a don Bhai (Judo Rathnam). Enters Dhivya (Jyothirmayi), who settles down in the same locality where Right lives. Meanwhile Right develops a difference of opinion with Bhai. Right ends up killing Bhai’s son. Bhai takes revenge by killing Balu. It brings a change of heart in Right and his men. When they decide to reform and lead a decent life, enters bad cop Prakash Raj, who forces them to take up rowdyism again. Meanwhile Bhai is on the pursuit of putting an end to Right.There is series of encounters between Right, Bhai ad Gopinath and finally Right prevails.