Arjun (Silambarasan), an animation artist living in London with his uncle (Ganesh), meets Nisha (Varalaxmi Sarathkumar) in a London pub. She is an aspiring dancer who is living with her aunt (Shobana). After going around together for a day, Nisha proposes a relationship and Arjun agrees. Arjun hates Nisha attending salsa classes with her friend Mojo as her partner. However, he agrees to marry her. After their wedding, Nisha makes it clear that she still wants to dance and enter the UK competition ‘Let’s Dance’, and make a career for herself. Arjun suddenly discovers that he is, at bottom, a “Pachai Thamizhan” who believes that a woman’s place is in the home (preferably the kitchen, but she has the freedom to walk from one room to another if she wants). On the advice of his uncle, he makes her pregnant, so that she stays away from dancing. Birth of their first child brings happiness to their family. They go to Hong Kong’s Disneyland for a tour. After the tour, in a family conversation, Arjun’s uncle mentions his “advice” of making Nisha pregnant so that she would not dance anymore. Realising that the child was the result of Arjun’s cheap plan and not love towards her, Nisha walks out. Arjun tries to console her, but gets angry when she meets a friend who greets her with a hug. Arjun goes and starts fighting with her friend, while she pleads him to stop. Then, a car comes and kills their baby. They separate and live in sorrow. After several months, Arjun comes to Nisha and pleads her aunt to make her come back. She comes back, on the condition that she continues dancing. Arjun beats up her partner Mojo, so that she will be left without a partner and leave the competition. She convinces Arjun to be her partner, but his steps fail in the first round. Impressed by Nisha dancing skills, judges give her another chance, provided she changes her partner. Arjun convinces her to do a “kuthu” dance, which impresses the judges. But she is not happy, because they have to clear 14 rounds to win the competition. Suddenly, Arjun decides to make her pregnant again. The movie ends with both of them living with their new child.