A book that belongs to the Hindu god of death, Yama, accidentally drops to earth. This book can be used to kill or save any human's life by writing his/her name in one of the pages of the book. Gopi, a young man, gets a hold of the book and abuses its powers for his selfish needs. Chitragupta, Yama's assistant, misses a book which contains all the details of human beings. The book falls into a city in Tamil Nadu. Brahmadeva orders Yama to locate the book within one month. Chitragupta fears that if the book is seen by the human beings, chaos will happen.

Sekhar and Muthuraman are tricked by a con man who promises them visas to fly to Dubai. In order to protect their families from any harm, they decide to swap addresses.

Idhayakkani and Thamarai fall in love but their villages, Pulipatti and Kilipatti, have been at each other’s throats for 50 years. Kani hopes to bring peace with their marriage but unfortunately, Thamarai’s dad is killed by his villagers. And, now, she and her uncle Veerasamy want revenge.

Arul, who works in a mill, is the youngest of four brothers in a family of goldsmiths. Once, Arul's brother stole a chain due to financial circumstances. As Arul had taken the blame for it, he was labelled as a "thief" and seen as a black sheep by his father. Thus, he vows never to make a gold ornament ever again. Kanmani, who moves into the opposite house, begins by playing tricks on him, but eventually falls for his character. Arul doesn't believe in love, and keeps his distance from her. One day, when Arul's father scolds him in the temple,

Surya is a lawyer with right values, who tries to redress things the legal way. He falls in love with Priya. His brother-in-law Shakthivel, also an upright lawyer, is killed in the process of upholding justice. Surya's sister also meets a pitiful end at the hands of criminals. But Surya refuses to give up. His mission is to make the layman understand his legal rights and how he does so forms the crux of the story.

A young man marries a Tamil girl, and fearing his family, he brings her to the house as a servant. Problem starts when his elder brothers falls for her too.

Guru, Nanda, Bala, Krishna, KK and Gowri are a group of college friends. Shiny becomes a part of their group. Krishna and Shiny are in love with each other but decide to keep their relationship a secret and things begin to unravel when Bala attempts suicide.

A class-divided friendship goes through highs and lows through several decades.