Maybe the audience is bored of seeing boy and girl romancing back home in India. So the director has situated the romance in a foreign locale.
Anyone could win a lucky draw of a foreign trip. Our hero Navdeep, heroine Aparna, Vadivelu, Thalaivasal Vijay, Ranjitha, Paravai Muniamma could join such a list who win a trip to London.
From the time they land in London, Navdeep and Aparna are at each other's throats. Both of them anyway want to marry only for love, so their clashes soon water down to love.