Malini, a vivacious advertising executive, is in a stagnant but happy marriage with Ashwin, the managing director of a paper manufacturing firm. The monotony of their married life forces Malini to question if they will possibly end up cheating on each other. A conversation between them leads them to go on a double date with their respective crushes from work, Pushparaj and Karuna. As the fun evening rolls, the four of them end up getting to know a lot about each other and themselves. Malini and Ashwin unearth their inner desires and come face to face to face with the fractures beginning to form in their marriage, but they also find their silver linings along the way, the ability to stay honest and be friends before spouses. Marriage 2.0 is a light and fun film that questions the existence of the traditional concept of marriage.