The film's plot revolves around a Punjabi boy, who falls in love with a Tamil girl. The regional and cultural clash that it leads to is what forms the rest of the story.
The trailer, which was launched at an event here, captures some fun as well as intense moments of the movie. Both the lead actors are upbeat about the movie, which is directed by Abhishek Varman and co-produced by Karan Johar's Dharma Productions and Sajid Nadiadwala's Nadiadwala Grandson Entertainment.
"It's a dream come true for me to be part of this film. I'm grateful to Karan Johar, Sajid Nadiadwala and Chetan Bhagat to have cast me in '2 States'," Arjun told reporters at the event.
Alia, who is riding high on the success of "Highway", said: "I was reading '2 States' while I was shooting for 'Student Of The Year'. I never thought a film will be made on this and I really liked the character of Ananya in the book. She is damn cool and I am happy to do this film."
The movie will release April 18.