“National” Selvam is a small-time photographer who lives with his father “National” Shanmugham. They run a digital photography studio in their small town. Next to the studio is a flex-board printing shop owned by Selvam’s friend Sadha. His assistant Vigadakavi is a photoshop wizard who designs the flex-boards. Selvam is in a relationship with Shenbaghavalli, his high school sweetheart.

Rangarajan (Parthiepan) is a physically challenged cab driver and he is also involved in real estate business to earn that extra money for his family. Since Rangarajan can converse in English, his manager (Singampuli) sends him to receive foreign clients and on one such incident, he meets an NRI named Kevin (Shanthanu). Rangarajan helps Kevin who wants a “homely atmosphere” to hire a private bungalow and gets his beautiful young wife Mohini (Parvathy Nair) to cook and do the housekeeping. During his brief stay in India, Kevin understands that Rangarajan is an alcoholic and the young Mohini is not in any way “satisfied with the old man”. This creates confusion in the mind of Kevin who falls for her and is led up the garden path.

Manoja, a girl accustomed with the western style of life and a typically introvert Prabhu, who has never been with a girl in his life. These two getting married – sounds impossible right? But that’s what arranged marriages can do! With Manoja and Prabu having different ideas about marriage and sex, they start off on the wrong foot and separate when the unthinkable happens on their path to harmony. Are they able to mend their ways again? – The answer to which is what the rest of the movie walks us through.