Tamizh's peaceful life is shattered when his father commits suicide. So, he tries to uncover the reason that prompted his father to kill himself.

Thamizh's love that develops gradually, damaging relationship with his cousin in the process, gets torn around the lovers' conflicting ideas of where his family fits in their nucleus of life. The lover gets married to the estranged cousin, Thamizh gets a wife he considers he is blessed to have had and just when things appear to be settling down, a devastating turn of events shakes his family apart. In his quest for reason, he learns his cousin had something to do with it and teaches the ones involved a 'costly' lesson.—PipingHotViews [Sivaram]

The film opens with Tamizh (Dhanush), his wife Yamuna (Samantha Ruth Prabhu) and his mother (Raadhika Sarathkumar) moving into a new home which is not very comfortable. Tamizh leaves them with his friend Kumaran (Sathish) after settling them in the new house in search of a job. All the companies are pleased with his resume but are hesitant to give him a job due to the occurrences in his past job. Finally, out of need, Tamizh becomes a worker in a roadside biriyani shop. He comes home for the night after he gets drunk. He then narrates the reason for him becoming like this through a series of flashbacks.—Santhosh