A simple father's life whose one mistake breaks him away from his dear family. Even after many years, when he finally meets his family, the same mistake haunts him back in a different form.

Five people from varied strata of society – a slum dweller who works as a cable operator, a runaway prostitute, a desperate woman drowning in debt, a rising musician, and a grief-stricken Muslim man – end up together in the same hospital, at a time when it is attacked by terrorists.

Pandidurai adopts military officer Jeevadurai's son, Rajaratnam, after Govindan, a criminal, kills him. Years later, Rajaratnam becomes a policeman and must take down Govindan and his henchman.

Karthik, a young lawyer falls in love with Poongothai, daughter of a businessman Vijayakumar. Vijayakumar and Poongothai's sister run a Multi-level marketing and are imprisoned for false accusations. Karthik brings Poongothai to his parents and seeks the permission from them – Nasser, a speech impaired person and Revathy, his mother. Karthik and Poongothai eventually get married after his parents consent.

A bloody power struggle erupts between three brothers who are vying to take over the family business following the death of their father.

Alli Thandha Vaanam is a 2014 Tamil film directed by Sridhar Prasad. The film stars and in lead roles.